CVE-2026-24061Active Exploitation(debian / debian_linux)

CRITICALCVSS 9.8 · CRITICALCISA KEV

Exploitation observed; activity peaked at 10 mentions and remains active

Immediate actions

Patch debian debian_linux systems immediately
Assume compromise if assets are exposed
Hunt for exploitation attempts and persistence artifacts
Increase monitoring for publicly documented tradecraft

Recommended action window: Immediate (within 24h)

NVD description

telnetd in GNU Inetutils through 2.7 allows remote authentication bypass via a "-f root" value for the USER environment variable.

debian CVEs Back to dashboard

9.0/ 10 priority

Sources & remediation

Listed in the CISA Known Exploited Vulnerabilities catalog. Federal remediation due date: 2026-02-16. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Patch / fix

Exploit / PoC references

Vendor / third-party advisories

Other references

Weakness type (CWE)

CWE-88

Priority

CRITICAL

Exploitation

ACTIVE

PoC

YES

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

debian_linux
inetutils

Threat summary

Active exploitation appears in 33 classified signals
Public PoC and exploit tooling are both present
Patch or workaround signal is available
123 mentions across 52 observed days

What's happening

Active exploitation reported across 33 signals
Exploit tool or code specified in 19 signals
PoC mentioned or linked in 24 signals
Patch or workaround mentioned in 42 signals
Technical details provided in 73 signals
Disclosure: 26 classified signals
General: 24 classified signals
Peaked 50d ago at 10 mentions (2026-01-28); latest day: 2
123 total mentions across 52 days

Affected systems

Vendors

debian gnu

Products

debian_linuxinetutils

1 version affected across 2 products

Deep dive

Activity timeline123 mentions / 52d

Signal classification6 categories

Active Exploitation

3327.3%

Disclosure

2621.5%

General

2419.8%

Patch

1613.2%

PoC

1512.4%

Exploit

75.8%

Referenced assets98 URLs

By indicator

Classification over time

Date	Total	Labels

2026-01-27	7	Active Exploitation3Disclosure1Exploit1General1Patch1
2026-01-28	10	Active Exploitation4Disclosure1Exploit1General1Patch2PoC1
2026-01-29	10	Active Exploitation3Disclosure2Exploit1General3PoC1
2026-01-30	9	Disclosure4General1Patch2PoC2
2026-01-31	7	Active Exploitation1Exploit1General3Patch2
2026-02-01	2	General1Patch1
2026-02-02	4	Active Exploitation1Disclosure1Patch1PoC1
2026-02-03	4	Active Exploitation1Disclosure1General1Patch1
2026-02-04	4	Active Exploitation2Disclosure1Exploit1
2026-02-05	5	Active Exploitation1General1Patch3
2026-02-06	3	Disclosure3
2026-02-07	1	Patch1
2026-02-08	1	Disclosure1
2026-02-09	2	Disclosure1General1
2026-02-10	2	General1PoC1
2026-02-11	3	Disclosure1General2
2026-02-12	1	General1
2026-02-14	4	Active Exploitation4
2026-02-15	4	Active Exploitation4
2026-02-16	1	Active Exploitation1
2026-02-19	1	General1
2026-02-24	1	Disclosure1
2026-02-25	1	Active Exploitation1
2026-02-26	2	Disclosure1General1
2026-02-27	1	Disclosure1
2026-02-28	2	Disclosure1Exploit1
2026-03-01	2	General1PoC1
2026-03-05	1	Disclosure1
2026-03-06	1	Active Exploitation1
2026-03-08	1	PoC1
2026-03-20	2	Disclosure1General1
2026-03-27	1	General1
2026-04-07	2	General1PoC1
2026-04-09	1	PoC1
2026-05-08	2	Active Exploitation2
2026-05-11	1	PoC1
2026-07-02	1	Patch1
2026-07-07	1	PoC1
2026-07-08	1	PoC1
2026-07-10	1	PoC1
2026-07-12	1	PoC1
2026-07-14	1	Active Exploitation1
2026-08-03	1	Patch1
2026-08-10	1	Disclosure1
2026-08-15	1	Active Exploitation1
2026-08-17	1	Active Exploitation1
2026-08-18	1	Exploit1
2026-08-23	1	General1
2026-09-12	1	Disclosure1
2026-09-15	1	Active Exploitation1
2026-09-25	1	Disclosure1

Full discourse20 posts

OffSec@offsectraining248d
Patch
🚨 CVE-2026-24061 - Critical Alert 🚨 A critical (CVSS 9.8) vulnerability in GNU InetUtils telnetd lets unauthenticated attackers bypass login and gain root access on affected systems. With an EPSS score ~92%, exploitation risk is extremely high. 📌 What to do: - Patch to the latest GNU InetUtils immediately - Disable Telnet where possible 👉 Full breakdown here: https://www.offsec.com/blog/cve-2026-24061/
Post summary
CVE-2026-24061 is a high‑severity flaw in GNU InetUtils telnetd that allows unauthenticated attackers to bypass login and gain root access; patch immediately or disable Telnet.
5111244417130.2K
327.1K followersView on X
ASH@ashy0x41242d
General
Telnetの深刻な脆弱性（CVE-2026-24061）が公表される6日前にTelnet通信の大幅な減少が観測されていたという話とその考察。いくつかの特定ASでフィルターが入った可能性が示唆されるとのこと。興味深い。
Post summary
The post observes a drop in Telnet traffic six days before CVE-2026-24061 was disclosed and speculates that filters may have been applied by certain AS, but it offers no technical detail, PoC, or evidence of exploitation.
210623189244.3K
858 followersView on X
👑 OFJAAAH 👑@ofjaaah255d
PoC
🔥Full CVE-2026-24061 Recon Pipeline - Oneliners🔥 https://github.com/KingOfBugbounty/KingOfBugBountyTips #CVE202624061 #criticalCVE https://t.co/hpoWIzjnU7
Post summary
The tweet shares a GitHub repository offering a full one-line recon pipeline for CVE-2026-24061, indicating that a proof‑of‑concept or exploit code is available.
041022115111.8K
19.8K followersView on X
Germán Fernández@1ZRR4H197d
General
🔸 45[.]137[.]70[.]27:8080 #opendir 🔎 → CVE-2026-24061 (Telnetd Auth Bypass) → CVE-2024-3721 (TBK DVR Command Injection) → CVE-2024-10443 (Synology RCE via Crontab) https://t.co/ybGabCZnj3
Post summary
The tweet lists three CVEs with brief vulnerability descriptors and a link, but provides no PoC, exploit code, active exploitation evidence, or patch information.
020095638.4K
37.6K followersView on X
coffnix@coffnix248d
Active Exploitation
Linux sendo Linux. CVE crítico no telnetd do GNU inetutils dando root remoto sem autenticação (CVE-2026-24061) bug esse introduzido em 2015 e que ficou quase 10 anosativo no código. Nível? CVSS 9.8, exploração trivial, zero credencial, zero interação, basta mandar USER como “-f root” e o login aceita feliz da vida. Exploração ativa fácil e rodando em 99% dos servidores e desktops Linux. E ainda tem gente rodando telnet em produção em 2026 ou defendendo o Linux no desktop falando que é mais "seguro" hein kkkkkk. Depois me perguntam pq considero o Linux inseguro PRA CARALHO né. Isso é mais um dos inúmeros lixos legados que quase todo Linux carrega. Serviço antiquado mantido por "compatibilidade" (eles disseram...), na prática é código remendado e ninguém responsável de verdade pela segurança cibernética. A resposta padrão pra esse tipo de falha tosca é sempre a mesma, aplica patch 10 anos quase depois, fecha porta e finge que o bug nunca existiu, como se isso fosse normal. E vai ter idiota normalizando uma falha de segurança ativa a quase 10 anos hein. kkkkkkkkk UNIX de verdade como o XNU/darwin da Apple e BSDs já tratam telnet como peça de museu a decadas. OpenBSD e FreeBSD sempre foram paranóicos com segurança, design limpo, isolamento completo e menos superfície de ataque. No macOS isso nem existe. Em suma, Linux em cybersec é gambiarra empilhada, BSDs e XNU/darwin seguem outra linha que é o que chamamos de security by design. E outro ponto, nunca vi a apple demorar mais de 60 dias pra corrigir uma falha de segurança. fonte: https://nvd.nist.gov/vuln/detail/CVE-2026-24061
Post summary
The post reports that CVE‑2026‑24061 is actively exploited on nearly all Linux systems, provides exploitation details, and calls for patching while criticizing the delayed response.
215667337.8K
6.5K followersView on X
X@SansLimit3219d
Active Exploitation
Exposed attacker infra scanning #CVE-2026-24061 using custom exploits. Bash history and directory artifacts reveal #KrakenNet #DoS tool deployment and external payload downloads. 176[.]65.148.254:8080 212[.]135.38.87 94[.]26.106.137 @malwrhunterteam @UK_Daniel_Card @1ZRR4H https://t.co/Urel0cp9IB
Post summary
The tweet claims attacker infrastructure is actively scanning and exploiting CVE-2026-24061 with custom exploits, referencing a DoS tool, but provides no PoC, patch, or technical details.
212072455.3K
205 followersView on X
SoyITPro@SoyITPro248d
Disclosure
🚨 Nueva vulnerabilidad crítica: CVE-2026-24061 #Linux El servicio GNU InetUtils telnetd permite acceso root sin credenciales por un fallo en la validación de USER. https://orca.security/resources/blog/cve-2026-24061-gnu-inetutils-telnetd-bypass/ https://t.co/6CrVXLVUlG
Post summary
A new critical vulnerability (CVE-2026-24061) in GNU InetUtils telnetd allows attackers to gain root access without credentials through a USER validation flaw. The announcement includes a link to a blog but no exploit code or patch information.
023062223.5K
12.1K followersView on X
LCFR@lcfr_eth61d
Disclosure
Pwnies this year a joke or something (who am i kidding every year?) Best RCE: Winner: ITScape: Guest-to-Host escape in KVM/arm64 (CVE-2026-46316) <- a bug which requires a shell/foothold on a target? (awesome bug. but ..) Remote authentication bypass in the GNU InetUtils telnetd (CVE-2026-24061) <- a daemon not in use anywhere. SELECT shell FROM postgres (CVE-2026-2006) <- probably never going to be exploited ITW. but not the preauth wordpress rce by @assetnote ...?
Post summary
The tweet announces several new RCE CVEs from the Pwnies 2026 event, listing their basic properties but providing no PoC, exploit code, patches, or evidence of active attacks.
27044135.4K
2.8K followersView on X
Censys@censysio255d
Active Exploitation
🚨 CVE-2026-24061: Critical (CVSS 9.8) remote authentication bypass vulnerability in GNU Inetutils telnetd allows unauthenticated attackers to gain root-level access to affected systems. Successful exploitation results in RCE with full system privileges. 🔴 CVSS 9.8 ⚠️ Actively exploited in the wild 🛠️ Affects GNU Inetutils telnetd version 1.9.3 up to and including version 2.7 ✔️ A patch has been merged upstream in GNU Inetutils 2.8. Upgrade immediately to a patched version or disable telnetd entirely, especially if exposed to the internet. 🔗 Full advisory: https://hubs.ly/Q040J7nG0 #CVE202624061 #infosec
Post summary
CVE-2026-24061 is a critical remote authentication bypass in GNU Inetutils telnetd that attackers are actively exploiting for root-level RCE; a patch is available in version 2.8 and urgent upgrade or disabling is advised.
1613682.7K
11.9K followersView on X
NullSecurityX@NullSecurityX95d
PoC
New video is live! 🚀 CraftCMS RCE to Root via Telnetd Auth Bypass In this walkthrough, we exploit CraftCMS CVE-2025-32432 for RCE, discover MySQL credentials, abuse password reuse for SSH access, and escalate to root via Telnetd CVE-2026-24061. https://youtu.be/eS7OLz_2FQo
Post summary
The tweet announces a video walkthrough that demonstrates the exploitation of CraftCMS CVE-2025-32432 to achieve remote code execution and root access via Telnetd CVE-2026-24061.
0512695.1K
12.3K followersView on X
NtAlertThread@ElementalX225d
Active Exploitation
Recovered a very weird open directory located out of China, using @etugenio , possibly related to anti-corruption bureau(?) , while contrasting they are abusing instances related to CVE-2026-24061 PoC written @C2IRIS , bonus, found this weird video as well, possible AI-Generated, related to anti-corruption!
Post summary
The post claims instances related to CVE-2026-24061 are being abused and mentions a PoC written by @C2IRIS. While it also references a PoC, the strongest indicator is the report of active abuse.
1501251.1K
2.4K followersView on X
NullSecurityX@NullSecurityX93d
PoC
CraftCMS RCE to Root via Telnetd Auth Bypass We exploit CraftCMS CVE-2025-32432 for RCE, discover MySQL credentials, abuse password reuse for SSH access, and escalate to root via Telnetd CVE-2026-24061. https://youtu.be/eS7OLz_2FQo
Post summary
The post demonstrates a multi‑step exploitation chain against CraftCMS and Telnetd, providing technical details but lacking explicit code, tools, or patch information.
0101432.2K
12.3K followersView on X
Justin Elze@HackingLZ185d
PoC
CVE-2026-32746 (GNU inetutils telnetd) - 32 years https://labs.watchtowr.com/a-32-year-old-bug-walks-into-a-telnet-server-gnu-inetutils-telnetd-cve-2026-32746/ CVE-2026-24061 (GNU inetutils telnetd) - 11 years https://www.safebreach.com/blog/safebreach-labs-root-cause-analysis-and-poc-exploit-for-cve-2026-24061/
Post summary
The excerpt references two CVEs in GNU inetutils telnetd, providing a link to a PoC exploit for CVE‑2026‑24061, while also describing technical details of the vulnerabilities but without mentioning active exploitation, patches, or false‑positive claims.
030961.9K
70.8K followersView on X
竹林人間🍣🍊3g+◢@Chromium_Linux186d
PoC
CVE-2026-24061、簡単にパスワードなしでログインできるのやばwww https://t.co/twhADJgLBD
Post summary
The tweet announces CVE-2026-24061, claims it allows login without a password, and provides a link that likely contains a proof‑of‑concept.
10094919
8.5K followersView on X
BINARLY🔬@binarly_io217d
PoC
...and, finally, a rule for the very recent authentication bypass in telnetd (CVE-2026-24061). Test case(s): https://github.com/vulhunt-re/tests/tree/main/posix/CVE-2026-24061 Rule: https://github.com/vulhunt-re/rules/blob/main/posix/CVE-2026-24061.vh https://t.co/hHsioMt6x0
Post summary
The tweet supplies test cases and a rule file for CVE‑2026‑24061, indicating a proof‑of‑concept exists, but provides no exploit code, patch, or details of active exploitation.
03092521
4.3K followersView on X
إبراهيم بوحيمد | Ibrahim Buhaimed@buhaimedi254d
Active Exploitation
2026 ولازلنا نناقش مصايب Telnet والبروتوكولات القديمة! ثغرة حرجة (CVE-2026-24061) في GNU InetUtils تعطي المهاجم صلاحيات Root بـ "سطر واحد" ، وبدون باسوورد حتى. الـ الاستغلال سهل والهجمات بدأت فعلياً من قبل المخترقين. [1/3] https://t.co/tIvrqemXuB
Post summary
CVE-2026-24061 in GNU InetUtils permits attackers to gain root privileges with a single line and no password, and reports indicate that exploitation has already begun in the wild.
10084965
46.9K followersView on X
loudog@loudoggeek253d
Patch
Critical patch for CVE-2026-24061 on Synology is out. Patch now, and patch any other system using telnetd. Also, it's 2026 so freaking set up SSH and disable TELNET, k? @ITSPARCCast
Post summary
A critical patch for CVE-2026-24061 on Synology has been released, and users are advised to apply it and disable TELNET. No exploitation details or PoC are mentioned.
02070226
569 followersView on X
𝕏 Bug Bounty Writeups 𝕏@bountywriteups256d
General
Exploit Lab: CVE-2026–24061 (telnetd) https://medium.com/@josh.beck2006/exploit-lab-cve-2026-24061-telnetd-772306d3b0ba?source=rss------bug_bounty-5 #bugbounty #bugbountytips #bugbountytip
Post summary
The text references a telnetd vulnerability (CVE-2026‑24061) but offers no concrete evidence of a PoC, exploit code, active exploitation, or patch information.
00054813
40.2K followersView on X
𝕏 Bug Bounty Writeups 𝕏@bountywriteups241d
General
How CVE-2026–24061 Grants Instant Root via Telnet https://medium.com/@mhammadalkhateeb22/how-cve-2026-24061-grants-instant-root-via-telnet-ad49019572e6?source=rss------bug_bounty-5 #bugbounty #bugbountytips #bugbountytip
Post summary
The post only references CVE-2026-24061 and hints at root privilege via Telnet, but offers no PoC, exploitation details, patch info, or technical depth.
01042817
40.2K followersView on X
Morty@MortyJin228d
Disclosure
GCONV_PATH Injection in GNU Inetutils telnetd Credit: Discovered by Justin Swartz Reference: https://seclists.org/oss-sec/2026/q1/199 Justin revealed that while CVE-2026-24061 fix addressed the "-f root" authentication bypass, the underlying environment variable sanitization issue remains incomplete. Technical Details: ▪️ telnetd's scrub_env() blacklist misses GCONV_PATH, LANGUAGE, OUTPUT_CHARSET ▪️ When telnetd (running as root) execs /bin/login, AT_SECURE=0 ▪️ glibc doesn't sanitize these dangerous variables ▪️ gettext triggers iconv_open() → loads malicious .so via GCONV_PATH ▪️ Result: Arbitrary code execution as root Timeline: 1999: CVE-1999-0073 disclosed 2026: CVE-2026-24061 patched (USER variable injection) 2026-Feb: Justin Swartz discloses GCONV_PATH vector still exploitable #Security #Infosec #CVE #Linux #Telnetd #PrivilegeEscalation
Post summary
Justin Swartz disclosed that GCONV_PATH injection in GNU Inetutils telnetd remains exploitable, allowing arbitrary root code execution due to incomplete environment variable sanitization.
11040190
121 followersView on X

CPE platform detail2 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

2 of 2 entries

Part	Vendor	Product	Version	Target SW	Target HW
OS	debian	debian_linux	11.0	-	-
App	gnu	inetutils	-	-	-

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What researchers are saying

CVE-2026-24061

OffSec[verified]@offsectrainingPatch

CVE-2026-24061 is a high‑severity flaw in GNU InetUtils telnetd that allows unauthenticated attackers to bypass login and gain root access; patch immediately or disable Telnet.

ASH[verified]@ashy0x41General

The post observes a drop in Telnet traffic six days before CVE-2026-24061 was disclosed and speculates that filters may have been applied by certain AS, but it offers no technical detail, PoC, or evidence of exploitation.

Germán Fernández[verified]@1ZRR4HGeneral

The tweet lists three CVEs with brief vulnerability descriptors and a link, but provides no PoC, exploit code, active exploitation evidence, or patch information.

coffnix[verified]@coffnixActive Exploitation

The post reports that CVE‑2026‑24061 is actively exploited on nearly all Linux systems, provides exploitation details, and calls for patching while criticizing the delayed response.

X[verified]@SansLimit3Active Exploitation

The tweet claims attacker infrastructure is actively scanning and exploiting CVE-2026-24061 with custom exploits, referencing a DoS tool, but provides no PoC, patch, or technical details.

SoyITPro[verified]@SoyITProDisclosure

A new critical vulnerability (CVE-2026-24061) in GNU InetUtils telnetd allows attackers to gain root access without credentials through a USER validation flaw. The announcement includes a link to a blog but no exploit code or patch information.

LCFR[verified]@lcfr_ethDisclosure

The tweet announces several new RCE CVEs from the Pwnies 2026 event, listing their basic properties but providing no PoC, exploit code, patches, or evidence of active attacks.

Censys[verified]@censysioActive Exploitation

CVE-2026-24061 is a critical remote authentication bypass in GNU Inetutils telnetd that attackers are actively exploiting for root-level RCE; a patch is available in version 2.8 and urgent upgrade or disabling is advised.