Vulnerability intelligence
CVE-2026-28321
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.
CVSS Score
9.1
Critical
EPSS — Exploit Probability
0.6%
Riskier than 45% of all CVEs
Exploitation
Not in CISA KEV
KEV does not include every exploited vulnerability
Remediation
unknown
Check vendor advisories
1 article across 1 outlet · first covered Jul 21, 2026 · latest Jul 21, 2026
Coverage timeline
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SolarWinds Patches Three Critical Serv-U Vulnerabilities Enabling RCEsecurityonline.info · Jul 21, 2026