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CVE-2026-28310 is a privilege escalation vulnerability in SolarWinds Serv-U affecting Serv-U 15.5.4 HF1 and earlier on Windows and Linux. The flaw allows an authenticated domain administrator to elevate their user type to system administrator, indicating a broken authorization condition in which a highly privileged administrative role can obtain a higher-tier administrative role than intended. Available classification maps the issue to CWE-862. The vulnerability is remotely reachable over the network and does not require user interaction, but it does require pre-existing high privileges within the application. Impact is noted as lower on Windows deployments than on Linux deployments.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical privilege escalation vulnerability in SolarWinds Serv-U that could allow elevation of privileges.
A privilege escalation vulnerability in SolarWinds Serv-U that allows a domain administrator to escalate privileges to system administrator.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.