Exploitation ongoing with high activity in latest observed window (1 mentions)
Recommended action window: Immediate (within 24h)
NVD description
Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character.
Listed in the CISA Known Exploited Vulnerabilities catalog. Federal remediation due date: 2022-04-27. Apply updates per vendor instructions.
Priority
MEDIUM
Exploitation
ACTIVE
PoC
YES
Patch
AVAILABLE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
15 versions affected across 31 products
| Date | Total | Labels |
|---|
| 2026-02-09 | 1 | Active Exploitation1 |
| 2026-02-12 | 2 | General2 |
| 2026-02-17 | 1 | General1 |
| 2026-02-25 | 1 | General1 |
| 2026-02-27 | 1 | General1 |
| 2026-03-12 | 1 | General1 |
| 2026-03-21 | 1 | General1 |
| 2026-03-29 | 1 | General1 |
| 2026-04-03 | 1 | General1 |
| 2026-04-06 | 1 | General1 |
| 2026-04-25 | 1 | General1 |
| 2026-05-01 | 1 | Patch1 |
| 2026-05-02 | 1 | General1 |
| 2026-06-05 | 1 | General1 |
| 2026-06-30 | 1 | General1 |
| 2026-07-27 | 1 | Disclosure1 |
@0xrinx No, for example 3 of them with 1 editor all like a lot Vim CVE-2019-12735 Snap CVE-2021-3156 Kernel CVE-2016-5195 @grok verify ✔️
Post summary
The passage merely enumerates a few CVE identifiers without providing any supporting technical details, evidence of exploitation, or mitigation information.
On this day, CVE-2021-3156: Baron Samedit, came to light. A heap overflow bug sat in sudo for nearly a decade before anyone found it, giving local users a path to root on most Linux systems. #CVE #LinuxSecurity
Post summary
The statement announces the discovery of CVE‑2021‑3156 (Baron Samedit), a heap‑overflow bug in sudo that allows local privilege escalation, but offers no PoC, exploit, patch, or evidence of active use.
@tibfulv @LundukeJournal Sudo had a catastrophic heap buffer overflow (CVE-2021-3156) hiding in its "battle-tested" C code for 10 years before discovery. It granted instant root. C doesn't stop hiding zero-days just because it's old. Rust stops them at compile. But this is a healthy discussion.
Post summary
The tweet briefly highlights the CVE‑2021‑3156 heap overflow in sudo, noting its severity but providing no PoC, tool, or exploitation details.
Top 5 Trending CVEs: 1 - CVE-2026-31431 2 - CVE-2021-3156 3 - CVE-2025-14847 4 - CVE-2024-27867 5 - CVE-2024-11182 #cve #cvetrends #cveshield #cybersecurity https://www.cveshield.com/dashboard
Post summary
The post simply lists trending CVE identifiers without providing any technical, patch, or exploit details.
The dataset: CVE-2021-3156 (sudo heap overflow), CVE-2022-0847 (Dirty Pipe), CVE-2023-38545 (curl SOCKS5). Real vulnerable functions from OpenSSL, Linux kernel, cURL.
Post summary
The text lists three CVEs—CVE-2021-3156, CVE-2022-0847, CVE-2023-38545—and identifies their associated vulnerable functions or components (sudo, Linux kernel, curl).
@ljachowicz . wszystko tu można wymyślić ale sam widzisz ilości stwierdzeń warunkowych, a ja mam na myśli jedynie fakt, żeby być w miarę precyzyjnym w naganianiu tej paniki… to lokalna klapa porównywalna w skutkach do CVE-2021-3156 albo CVE-2025-32462/CVE-2025-32463 i wystarczy zpatchować
Post summary
The post mentions a local flaw comparable to known CVEs and asserts that patching is sufficient, yet it provides no explicit patch details or exploit discussion.
@DsplayNam3 @CR1337 Oh seriously. Linux hacked also but in other sophisticated way f.e. 3 of them with 1 editor all like a lot Vim CVE-2019-12735 Snap CVE-2021-3156 Kernel CVE-2016-5195 @grok verify ✔️
Post summary
The post lists several CVEs but provides no additional context, technical details, or actionable information.
I just completed Baron Samedit room on TryHackMe! A tutorial room exploring CVE-2021-3156 in the Unix Sudo Program. Room Three in the SudoVulns Series https://tryhackme.com/room/sudovulnssamedit?utm_campaign=social_share&utm_medium=social&utm_content=room&utm_source=twitter&sharerId=684d724b80fe1af75347f3e4 #tryhackme via @tryhackme
Post summary
The user completed a TryHackMe tutorial room that covers CVE-2021-3156 in the Unix Sudo program, but no PoC, exploit, patch, or detailed technical information is provided.
En una agencia digital de 20 empleados en España, un servidor Linux (Debian 10) sin parches durante 9 meses permitió un exploit simple (CVE-2021-3156 en sudo). Resultado: datos cifrados, 4 días offline, pérdida de +12.000 € en ventas y recuperación.
Post summary
A Spanish digital agency’s unpatched Debian 10 server was exploited via CVE‑2021‑3156, resulting in data encryption, four days of downtime, and over €12,000 in lost sales.
I just completed Baron Samedit room on TryHackMe! A tutorial room exploring CVE-2021-3156 in the Unix Sudo Program. Room Three in the SudoVulns Series https://tryhackme.com/room/sudovulnssamedit?utm_campaign=social_share&utm_medium=social&utm_content=room&utm_source=twitter&sharerId=65869e2abbbd1398b6caad7d #tryhackme via @tryhackme
Post summary
The tweet reports completion of a TryHackMe tutorial room focused on CVE-2021-3156; it does not provide technical details, exploits, or patch information.
I just completed Baron Samedit room on TryHackMe! A tutorial room exploring CVE-2021-3156 in the Unix Sudo Program. Room Three in the SudoVulns Series https://tryhackme.com/room/sudovulnssamedit?utm_campaign=social_share&utm_medium=social&utm_content=room&utm_source=twitter&sharerId=66457951599dd28bfb000ded #tryhackme via @tryhackme #tryhackme #learning #Consistency
Post summary
The tweet notes the completion of a TryHackMe tutorial room on CVE-2021-3156, focusing on learning about the vulnerability without mentioning PoCs, exploits, patches, or detailed technical aspects.
I just completed Baron Samedit room on TryHackMe! A tutorial room exploring CVE-2021-3156 in the Unix Sudo Program. Room Three in the SudoVulns Series https://tryhackme.com/room/sudovulnssamedit?utm_campaign=social_share&utm_medium=social&utm_content=room&utm_source=twitter&sharerId=61eac99b5af18f0042650fad #tryhackme via @tryhackme
Post summary
User reports completing a TryHackMe tutorial room that explores CVE-2021-3156 in Unix Sudo, without providing detailed exploit, patch, or technical information.
I just completed Baron Samedit room on TryHackMe! A tutorial room exploring CVE-2021-3156 in the Unix Sudo Program. Room Three in the SudoVulns Series https://tryhackme.com/room/sudovulnssamedit?utm_campaign=social_share&utm_medium=social&utm_content=room&utm_source=twitter&sharerId=662fb6411f3680a87baf9e1f #tryhackme via @tryhackme
Post summary
The tweet announces completion of a TryHackMe tutorial room covering CVE‑2021‑3156, without providing PoC details, exploit code, or mitigation information.
I just completed Baron Samedit room on TryHackMe! A tutorial room exploring CVE-2021-3156 in the Unix Sudo Program. Room Three in the SudoVulns Series https://tryhackme.com/room/sudovulnssamedit?utm_campaign=social_share&utm_medium=social&utm_content=room&utm_source=twitter&sharerId=688bed36673ef8570ab2dc8b #tryhackme via @tryhackme
Post summary
The tweet announces completion of a TryHackMe tutorial room focused on CVE-2021-3156, but it does not provide explicit PoC, exploit details, or other actionable information.
@grok What is CVE-2021-3156 (Baron Samedit) sudo vulnerability? (respond in fun mode).
Post summary
The message is a straightforward question asking for an explanation of CVE-2021-3156, without supplying any technical details or additional information.
⚠️ مجرد وجود SUID على sudo أو passwd طبيعي جدًا، الخطر غالبًا يكون في برامج غير معروفة/"الاعدادات الخاطئة misconfiguration" مثل ثغرة CVE-2021-3156 في sudo. 🔥اشترك الان الدورات الاحترافية عبر اكاديمية الدرع الأخضر 👇🏻 https://greenarmor.academy
Post summary
The post merely notes that CVE‑2021‑3156 is a vulnerability in sudo, without providing any further technical, exploit, or mitigation information.
Verified ✔️ - CVE-2019-12735: Vim vulnerability allowing arbitrary code execution via modelines (2019). - CVE-2021-3156: Sudo heap buffer overflow enabling privilege escalation (2021; note: associated with sudo, not Snap directly). - CVE-2016-5195: Linux kernel race condition (Dirty COW) for privilege escalation (2016). For context, Notepad's recent issue is CVE-2026-20841 (RCE, 2026).
Post summary
The text provides a brief list of several CVEs with minimal technical details, without indicating exploitation, PoC, patch, or false positive information.
37 of 37 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | beyondtrust | privilege_management_for_mac | - | - | - |
| App | beyondtrust | privilege_management_for_unix\/linux | - | - | - |
| OS | debian | debian_linux | 10.0 | - | - |
| OS | debian | debian_linux | 9.0 | - | - |
| OS | fedoraproject | fedora | 32 | - | - |
| OS | fedoraproject | fedora | 33 | - | - |
| App | mcafee | web_gateway | 10.0.4 | - | - |
| App | mcafee | web_gateway | 8.2.17 | - | - |
| App | mcafee | web_gateway | 9.2.8 | - | - |
| App | netapp | active_iq_unified_manager | - | vmware_vsphere | - |
| App | netapp | cloud_backup | - | - | - |
| App | netapp | hci_management_node | - | - | - |
| App | netapp | oncommand_unified_manager_core_package | - | - | - |
| App | netapp | ontap_select_deploy_administration_utility | - | - | - |
| App | netapp | ontap_tools | 9 | vmware_vsphere | - |
| App | netapp | solidfire | - | - | - |
| App | oracle | communications_performance_intelligence_center | - | - | - |
| HW | oracle | micros_compact_workstation_3 | - | - | - |
| OS | oracle | micros_compact_workstation_3_firmware | 310 | - | - |
| HW | oracle | micros_es400 | - | - | - |
| OS | oracle | micros_es400_firmware | - | - | - |
| HW | oracle | micros_kitchen_display_system | - | - | - |
| OS | oracle | micros_kitchen_display_system_firmware | 210 | - | - |
| HW | oracle | micros_workstation_5a | - | - | - |
| OS | oracle | micros_workstation_5a_firmware | 5a | - | - |
| HW | oracle | micros_workstation_6 | - | - | - |
| OS | oracle | micros_workstation_6_firmware | - | - | - |
| App | oracle | tekelec_platform_distribution | - | - | - |
| App | sudo_project | sudo | - | - | - |
| App | sudo_project | sudo | 1.9.5 | - | - |
| App | sudo_project | sudo | 1.9.5 | - | - |
| OS | synology | diskstation_manager | 6.2 | - | - |
| App | synology | diskstation_manager_unified_controller | 3.0 | - | - |
| HW | synology | skynas | - | - | - |
| OS | synology | skynas_firmware | - | - | - |
| HW | synology | vs960hd | - | - | - |
| OS | synology | vs960hd_firmware | - | - | - |