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Exploitation reportedNot in CISA KEV yetFix available

CVE-2025-40553

Exploitation reported by one source. First attested on 2026-09-01 by GCVE · previdian.

  • Published2026-01-28
  • Fixed in2026.1
  • WeaknessCWE-502

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

SolarWinds Web Help Desk was found to be susceptible to an untrusted data deserialization vulnerability that could lead to remote code execution, which would allow an attacker to run commands on the host machine. This could be exploited without authentication.

Timeline

dates in UTC
  1. 2026-01-2808:16CVE publishedNVD
  2. 2026-09-0112:15Listed as exploited by GCVEGCVE
  3. 2026-09-0112:15Exploitation first reportedGCVE

Versions per branch

NVD
Solarwinds web help desk
BranchAffectedFixed in
2026.1< 2026.12026.1

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As SolarWinds, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • SolarWinds Web Help Deskother versions: affected
    Affected
    • = 12.8.8 HF1 and belowno fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-01-28

Fix

  1. Update Solarwinds web help desk to 2026.1

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2026-01-28
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-5gq3-mh83-6m28

Frequently asked questions

What is CVE-2025-40553?

SolarWinds Web Help Desk was found to be susceptible to an untrusted data deserialization vulnerability that could lead to remote code execution, which would allow an attacker to run commands on the host machine. This could be exploited without authentication.

Is CVE-2025-40553 actively exploited?

A proof-of-concept exploit exists for CVE-2025-40553, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2025-40553?

CVE-2025-40553 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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