Is CVE-2026-28310 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-28310 being exploited in the wild.

How severe is CVE-2026-28310?

Critical severity, with a CVSS score of 9.1, published 21 July 2026.

Which products and versions are affected?

SolarWinds Serv-U 15.5.4 HF1 and below.

Is there a fix for CVE-2026-28310?

A patch was published on 2026-07-21: Fix released in version 2026.3. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-28310 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-28310?

Check whether you run SolarWinds Serv-U at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-28310: SolarWinds Serv-U privilege escalation in administrative interface

CVE-2026-28310 · Severity: critical · CVSS 9.1 · Published 2026-07-21

SolarWinds Serv-U, a managed file transfer server, is affected by a security flaw that allows a domain administrator to gain full system administrator privileges. This could allow an individual with limited administrative access to take complete control over the entire file transfer server and its data. The risk is particularly high for Linux-based deployments, though Windows systems are also affected.

Technologies: SolarWinds Serv-U. Vendors: SolarWinds.

Quick answers

Is CVE-2026-28310 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-28310 being exploited in the wild.
How severe is CVE-2026-28310?: Critical severity, with a CVSS score of 9.1, published 21 July 2026.
Which products and versions are affected?: SolarWinds Serv-U 15.5.4 HF1 and below.
Is there a fix for CVE-2026-28310?: A patch was published on 2026-07-21: Fix released in version 2026.3. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-28310 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-28310?: Check whether you run SolarWinds Serv-U at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A privilege escalation vulnerability exists in SolarWinds Serv-U due to missing authorization (CWE-862). An attacker with domain administrator credentials can exploit this flaw over the network to elevate their privileges to a full system administrator. While the vulnerability affects both platforms, the impact is reportedly lower in Windows deployments compared to Linux. The issue is addressed in Serv-U version 2026.3.

Affected products

SolarWinds Serv-U 15.5.4 HF1 and below

Timeline

2026-07-21: advisory: Initial advisory published by SolarWinds and NVD.
2026-07-21: patched: Fix released in version 2026.3.

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.