SolarWinds Web Help Desk Deserialization of Untrusted Data Remote Code Execution Vulnerability
Affects SolarWinds Web Help Desk 12.8.8 HF1 and all previous versions. Fixed in SolarWinds Web Help Desk 2026.1.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Fix
- Fixed in SolarWinds Web Help Desk 2026.1
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: active
- Automatable: yes
- Technical impact: total
Summary
SolarWinds Web Help Desk, an IT service management application, is affected by this flaw. An attacker could exploit it without logging in to run commands on the server hosting the software.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original 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
- CVE published
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CISA SSVC assessment
Exploitation: active · Automatable: yes · Technical impact: total
- CISA remediation deadline
Due date for US federal agencies to patch
- Record last updated
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
Affected versions
- SolarWinds Web Help Desk
12.8.8 HF1 and below
References 2
solarwinds.com
documentation.solarwinds.com
Questions about CVE-2025-40551
What does this mean?
The product deserializes untrusted data without proper checks. This could let an attacker run commands on the host machine remotely.Source: solarwinds.com
Am I affected, and how do I check?
The advisory covers SolarWinds Web Help Desk 12.8.8 HF1 and all previous versions. Compare the installed version against that release to see where it falls.Source: solarwinds.com
What should I do about it?
Upgrade to SolarWinds Web Help Desk 2026.1, which the advisory lists as the fixed version.Source: solarwinds.com
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2026-02-03, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data