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CVE-2025-40539

28
FAUCET Score

CVE-2025-40539 is a critical type confusion vulnerability in SolarWinds Serv-U that allows an authenticated attacker with administrative privileges to execute arbitrary native code as a privileged account. This vulnerability carries a CVSS score of 9.1 (CRITICAL) due to its network attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While there are no known public exploits or active exploitation, the vulnerability has garnered significant community discussion and media coverage, indicating a high level of awareness.

Impacted Technologies

VendorProductVersion(s)CPE
< 15.5.4CPE matchmatch criteria
cpe:2.3:a:solarwinds:serv-u:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.3
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.45%
Probability of exploitation in next 30 days
EPSS Percentile
36.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0044 is in the 19th percentile among its peer group of 464 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.7 Bluesky, 0.4 Mastodon, and 1.7 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

applepatch availablevia llm_extracted
Fixed in: 15.5.4

Vendor Advisories (1)

applellm-apple-0cbab6ef4c96708eCRITICAL

SolarWinds Serv-U Type Confusion Remote Code Execution Vulnerability

Feb 23, 2026

References

documentation.solarwinds.com / en/success_center/servu/content/release_notes/servu_15-5-4_release_notes.htm
Release NotesVendor Advisory
solarwinds.com / trust-center/security-advisories/CVE-2025-40539
Vendor Advisory