CVE-2025-40539Disclosure(solarwinds / serv-u)

LOWCVSS 7.2 · HIGH

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

Patch solarwinds serv-u systems immediately
Hunt for exploitation attempts and persistence artifacts
Increase monitoring for publicly documented tradecraft

Recommended action window: High priority (within 72h)

NVD description

A type confusion vulnerability exists in Serv-U which when exploited, gives a malicious actor the ability to execute arbitrary native code as privileged account. This issue requires administrative privileges to abuse. On Windows deployments, the risk is scored as a medium because services frequently run under less-privileged service accounts by default.

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2.0/ 10 priority

Sources & remediation

Vendor / third-party advisories

Weakness type (CWE)

CWE-704

Priority

LOW

Exploitation

NONE

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.

serv-u

Threat summary

Public PoC is present in monitored signal
Patch or workaround signal is available
12 mentions across 6 observed days
Momentum state: stable

What's happening

PoC mentioned or linked in 1 signal
Patch or workaround mentioned in 4 signals
Technical details provided in 11 signals
Disclosure: 8 classified signals
Peaked 5d ago at 4 mentions (2026-02-24); latest day: 1
12 total mentions across 6 days

Affected systems

Vendors

solarwinds

Products

serv-u

Deep dive

Activity timeline12 mentions / 6d

Signal classification2 categories

Disclosure

866.7%

Patch

433.3%

Referenced assets13 URLs

By indicator

Classification over time

Date	Total	Labels

2026-02-24	4	Disclosure4
2026-02-25	4	Disclosure1Patch3
2026-02-26	1	Patch1
2026-02-27	1	Disclosure1
2026-02-28	1	Disclosure1
2026-03-01	1	Disclosure1

Full discourse12 posts

CCB Alert@CCBalert226d
Patch
Warning: 4 critical vulnerabilities in #SolarWinds Serv-U. CVE-2025-40538, CVE-2025-40539, CVE-2025-40540 and CVE-2025-40541 share the same CVSS score of 9.1. Threat actors could exploit either to achieve remote code execution. #RCE! https://ccb.belgium.be/advisories/warning-critical-vulnerabilities-solarwinds-serv-u-servers-can-be-exploited-remote-code #Patch #Patch #Patch
Post summary
The advisory highlights four critical RCE vulnerabilities in SolarWinds Serv‑U with CVSS 9.1 and urges users to apply the available patch.
03040362
7.2K followersView on X
GovCERT.CZ@GOVCERT_CZ226d
Disclosure
🚨Upozorňujeme na sérii RCE zranitelností v SolarWinds Serv-U. CVE-2025-40538: Chyba zabezpečení v oblasti řízení přístupu, která při zneužití umožňuje útočníkovi vytvořit uživatele se systémovými oprávněními a spustit libovolný kód jako root pomocí oprávnění správce domény nebo správce skupiny. CVE-2025-40539: Chyba typu „type confusion“, která při zneužití umožňuje útočníkovi spustit libovolný nativní kód jako root. CVE-2025-40540: Chyba typu „type confusion“, která při zneužití umožňuje útočníkovi spustit libovolný nativní kód jako root. CVE-2025-40541: Zranitelnost typu IDOR (Insecure Direct Object Reference), která útočníkovi umožňuje spustit nativní kód jako root. K úspěšnému zneužití těchto zranitelností je potřeba účet s administrátorským oprávněním. 📌 Doporučujeme aktualizovat na verzi 15.5.4 či novější.
Post summary
SolarWinds Serv‑U is affected by a series of RCE vulnerabilities (CVE‑2025‑40538‑40541) that allow root execution; updating to version 15.5.4 or newer is recommended.
01020776
4.2K followersView on X
Dr. John D. Johnson@johndjohnson224d
Disclosure
Patch these 4 critical, make-me-root SolarWinds bugs ASAP The four flaws, all of which earned a 9.1 CVSS rating, include a broken access control vulnerability (CVE-2025-40538), two type confusion bugs (CVE-2025-40540 and CVE-2025-40539), and an Insecure Direct Object Reference (IDOR) issue (CVE-2025-40541), all of which can lead to remote code execution (RCE). https://nuel.ink/5bzFZF
Post summary
Four newly disclosed SolarWinds CVEs with CVSS 9.1 that enable remote code execution are highlighted, and the post urges immediate patching.
0101083
1.1K followersView on X
Vulmon Vulnerability Feed@VulmonFeeds227d
Disclosure
CVE-2025-40539 Type Confusion Vulnerability in Serv-U Enables Privileged Native Code Execution https://vulmon.com/vulnerabilitydetails?qid=CVE-2025-40539
Post summary
A type confusion vulnerability in Serv‑U (CVE‑2025‑40539) allows privileged native code execution.
0001143
4.0K followersView on X
CRAC Learning - Tech@cracbot222d
Disclosure
CVE-2025-40539 (CVSS:9.1, CRITICAL) is Analyzed. A type confusion vulnerability exists in Serv-U which when exploited, gives a malicious actor the ability to execute arb..https://nvd.nist.gov/vuln/detail/CVE-2025-40539 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre
Post summary
The post references CVE‑2025‑40539, noting a type‑confusion flaw in Serv‑U with a CVSS score of 9.1 that could allow arbitrary code execution, but provides no PoC, exploit, or patch information.
0000074
173 followersView on X
CRAC Learning - Tech@cracbot223d
Disclosure
CVE-2025-40539 (CVSS:9.1, CRITICAL) is Analyzed. A type confusion vulnerability exists in Serv-U which when exploited, gives a malicious actor the ability to execute arb..https://nvd.nist.gov/vuln/detail/CVE-2025-40539 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre
Post summary
The post announces a critical type‑confusion flaw in Serv‑U (CVE‑2025‑40539) with a high CVSS score, but provides no evidence of exploitation, patches, or PoC details.
0000093
173 followersView on X
セキュリティ対策Lab@securityLab_jp225d
Patch
SolarWinds Serv-Uが4件の重大な脆弱性を修正(CVE-2025-40538 / 40539 / 40540 / 40541) https://rocket-boys.co.jp/security-measures-lab/solarwinds-serv-u-fixes-four-critical-vulnerabilities-cve-2025-40538-cve-2025-40539-cve-2025-40540-cve-2025-40541/ #セキュリティ対策Lab #セキュリティ #Security #CybersecurityNews
Post summary
SolarWinds Serv-U has released fixes for four critical vulnerabilities (CVE-2025-40538 to 40541).
00000115
319 followersView on X
cybersecuritypath@cybrsecpath226d
Patch
https://cybersecuritypath.com/solarwinds-serv-u-type-confusion-flaw-enables-rce-cve-2025-40539/
Post summary
SolarWinds Serv‑U is affected by a type‑confusion flaw (CVE‑2025‑40539) that permits remote code execution; a patch is available, technical details are disclosed, but no active exploitation or PoC is confirmed.
000005
View on X
SecAlerts@SecAlertsCo226d
Patch
Patches for 4 CVSS 9.1 #Solarwinds vulns. Info at SecAlerts: CVE-2025-40538: https://secalerts.co/vulnerability/CVE-2025-40538 CVE-2025-40539: https://secalerts.co/vulnerability/CVE-2025-40539 CVE-2025-40540: https://secalerts.co/vulnerability/CVE-2025-40540 CVE-2025-40541: https://secalerts.co/vulnerability/CVE-2025-40541 #ciso #cio #cto #vulnerabilities #cybersecurity #msp #mssp https://t.co/UMGDgMHeOT
Post summary
The tweet announces that patches are available for four high‑severity SolarWinds vulnerabilities (CVSS 9.1) and provides links to vendor advisories.
0000094
798 followersView on X
CVE@CVEnew227d
Disclosure
CVE-2025-40539 A type confusion vulnerability exists in Serv-U which when exploited, gives a malicious actor the ability to execute arbitrary native code as privileged account. Thi… https://www.cve.org/CVERecord?id=CVE-2025-40539
Post summary
The text announces CVE‑2025‑40539, a type‑confusion flaw in Serv‑U that permits attackers to run arbitrary native code with privileged rights.
00000128
56.5K followersView on X
CVEFind.com@CveFindCom227d
Disclosure
[CVE-2025-40539: CRITICAL] Type confusion vulnerability in Serv-U allows executing arbitrary code as privileged account. Needs admin privileges to exploit. Medium risk on Windows due to default less-privileg...#cve,CVE-2025-40539,#cybersecurity https://cvefind.com/CVE-2025-40539
Post summary
The post announces a critical type‑confusion flaw in Serv‑U that permits privileged code execution, requiring admin rights, and notes a medium risk on Windows.
0000071
584 followersView on X
CVETodo@CveTodo227d
Disclosure
CVE-2025-40539 is a **type confusion vulnerability** found in Serv-U, a popular file transfer server software. When exploited, this flaw allows a malicious actor to execute arbitrary native code with the privileges of the compromised service, which can lead to full system compromise. #Cybersecurity #CVE #CriticalCVE #CriticalVulnerability #RemoteCodeExecution #PrivilegeEscalation #Microsoft https://cvetodo.com/cve/CVE-2025-40539
Post summary
The post announces CVE‑2025‑40539 as a type‑confusion flaw in Serv‑U that can lead to remote code execution and full system compromise, but provides no PoC, exploit, or patch details.
0000049
20 followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	solarwinds	serv-u	-	-	-

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Back to dashboard solarwinds CVEs serv-u vulnerabilities

What researchers are saying

CVE-2025-40539

GovCERT.CZ[verified]@GOVCERT_CZDisclosure

SolarWinds Serv‑U is affected by a series of RCE vulnerabilities (CVE‑2025‑40538‑40541) that allow root execution; updating to version 15.5.4 or newer is recommended.

Dr. John D. Johnson[verified]@johndjohnsonDisclosure

Four newly disclosed SolarWinds CVEs with CVSS 9.1 that enable remote code execution are highlighted, and the post urges immediate patching.

セキュリティ対策Lab[verified]@securityLab_jpPatch

SolarWinds Serv-U has released fixes for four critical vulnerabilities (CVE-2025-40538 to 40541).

CVETodo[verified]@CveTodoDisclosure

The post announces CVE‑2025‑40539 as a type‑confusion flaw in Serv‑U that can lead to remote code execution and full system compromise, but provides no PoC, exploit, or patch details.

CCB Alert@CCBalertPatch

The advisory highlights four critical RCE vulnerabilities in SolarWinds Serv‑U with CVSS 9.1 and urges users to apply the available patch.

Vulmon Vulnerability Feed@VulmonFeedsDisclosure

A type confusion vulnerability in Serv‑U (CVE‑2025‑40539) allows privileged native code execution.

CRAC Learning - Tech@cracbotDisclosure

The post references CVE‑2025‑40539, noting a type‑confusion flaw in Serv‑U with a CVSS score of 9.1 that could allow arbitrary code execution, but provides no PoC, exploit, or patch information.

CRAC Learning - Tech@cracbotDisclosure

The post announces a critical type‑confusion flaw in Serv‑U (CVE‑2025‑40539) with a high CVSS score, but provides no evidence of exploitation, patches, or PoC details.