CVE-2026-28325 SolarWinds Observability Self-Hosted Unauthenticated Remote Code Execution Vulnerability
Unauthenticated attackers can execute arbitrary code via deserialization in specific communication modes of SolarWinds Observability Self-Hosted.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-28325?
CVE-2026-28325 is a high-severity unsafe deserialization vulnerability in SolarWinds Observability Self-Hosted, published on 22 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
SolarWinds Observability Self-Hosted was found to be affected by an unauthenticated remote code execution vulnerability stemming from deserialization of untrusted data when the application is configured to use a specific communication mode.
Weakness: CWE-502
Which versions are affected by CVE-2026-28325?
How do I fix CVE-2026-28325?
No fix has been published for CVE-2026-28325 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-28325 being exploited?
There is no known exploitation of CVE-2026-28325 in the wild and no public exploit code.
Sources
Also known as GHSA-r476-9mp7-phxc.