What’s Vulnerable › Vulnerabilities

CVE-2025-26397: SolarWinds Observability Self-Hosted Deserialization of Untrusted Data Local Privilege Escalation Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-07-24 · updated 2026-06-17
• Weakness: CWE-502

Description

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.

Affected products

• SolarWinds Observability Self-Hosted: before 2025.2.1 — fixed in 2025.2.1

How to fix

Upgrade to a fixed version: SolarWinds Observability Self-Hosted 2025.2.1. Check the vendor advisory for mitigations.

References

• https://documentation.solarwinds.com/en/success_center/orionplatform/content/release_notes/solarwinds_platform_2025-2-1_release_notes.htm
• https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-26397

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