SolarWinds Observability Self-Hosted Deserialization of Untrusted Data Local Privilege Escalation Vulnerability

published 2025-07-24 15 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-22489

cvss: 7.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 28%
public exploits: 0; none known

SolarWinds Observability Self-Hosted is susceptible to Deserialization of Untrusted Data Local Privilege Escalation vulnerability. An attacker with low privileges can escalate privileges to run malicious files copied to a permission-protected folder. This vulnerability requires authentication from a low-level account and local access to the host server.

Patch / fix

fixed in 1 links 1

solarwinds observability_self-hosted 2025.2.1

solarwinds.com/trust-center/security-advisories/CVE-2025-26397 advisory

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 15 mo ago (2025-07-24)

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

SolarWinds SolarWinds Observability Self-Hosted

Classification

Weakness

CWE-502 Deserialization of Untrusted Data

References

solarwinds.com /trust-center/security-advisories/CVE-2025-26397
patch, vendor-advisory
documentation.solarwinds.com /en/success_center/orionplatform/content/release_notes/solarwinds_platform_2025-2-1_release_notes.htm
release-notes

Sources

CVE List CVE-2025-26397
NVD CVE-2025-26397

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary