SolarWinds Observability Self-Hosted Unauthenticated Remote Code Execution Vulnerability (CVE-2026-28325) | HOL Guard CVE

High · CVSS 8.8CVE-2026-28325

SolarWinds Observability Self-Hosted Unauthenticated Remote Code Execution Vulnerability

Answer in brief

CVE-2026-28325 records a High severity (CVSS 8.8) vulnerability in SolarWinds Observability Self-Hosted Unauthenticated Remote Code Execution Vulnerability. The current sources do not mark it as known exploited. The current feed maps SolarWinds/Observability Self-Hosted (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 22, 2026Updated Sep 22, 2026Source checked Sep 22, 2026First seen by HOL Sep 22, 2026Material review Sep 22, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.8
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps SolarWinds/Observability Self-Hosted (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
SolarWinds/Observability Self-Hostedgeneric	>=0 <2026.2.3	2026.2.3

Recommended response

Check inventory. Check lockfiles and deployed manifests for SolarWinds/Observability Self-Hosted.
Review the reported fix. Update SolarWinds/Observability Self-Hosted to 2026.2.3 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 22, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.