by Kastro
Paper/Archive/CVE-2026-28321

CVE-2026-28321

SolarWinds Serv-U — SolarWinds Serv-U Broken Access Control Vulnerability

EPSS 0.6%CVSS 9.1
critical.is priorityof 100
37
CVSS 9.1 (CNA)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 47.6.476 × 209.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

SolarWinds Serv-U is affected by a broken access control vulnerability that could allow arbitrary file read and write, which can then be used to escalate privileges and execute code as root. A domain administrator access is required, and the impact is lower in Windows installations.

Affected

ProductAffectedFixed inSource
Serv-U15.5.4 HF1 and below–CNA

Scores by source

SolarWinds (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

advisorysolarwinds.com/trust-center/security-advisories/CVE-2026-28321refdocumentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_2026-3_release_notes.htm