SolarWinds Web Help Desk Deserialization of Untrusted Data Privilege Escalation Vulnerability
Affects SolarWinds Web Help Desk 12.8.7 and all earlier versions. Fixed in 12.8.7 HF1.
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 12.8.7 HF1
- 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
Summary
SolarWinds Web Help Desk is affected by this vulnerability, which could allow an unauthenticated attacker to run arbitrary commands on the host machine.
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 unauthenticated AjaxProxy deserialization remote code execution vulnerability that, if exploited, would allow an attacker to run commands on the host machine. This vulnerability is a patch bypass of CVE-2024-28988, which in turn is a patch bypass of CVE-2024-28986.
Timeline
- CVE published
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- 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
12.8.7 and below
References 2
solarwinds.com
documentation.solarwinds.com
Questions about CVE-2025-26399
What does this mean?
A deserialization flaw in Web Help Desk lets an attacker run commands on the host machine. The advisory describes it as remote code execution.Source: solarwinds.com
Am I affected, and how do I check?
SolarWinds Web Help Desk 12.8.7 and all previous versions are affected. To check, compare the installed Web Help Desk version against 12.8.7.Source: solarwinds.com
What should I do about it?
Upgrade to SolarWinds Web Help Desk 12.8.7 HF1, which contains the fix.Source: solarwinds.com
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2026-03-09, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data