SolarWinds Serv-U Insecure Direct Object Reference (IDOR) Vulnerability

published 2026-07-21 3 mo ago modified 2026-10-24 15 d ago also EUVD-2026-46284

cvss: 9.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.8%; EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits: 0; none known

SolarWinds Serv-U is affected by an insecure direct object reference (IDOR) vulnerability that can lead to privilege escalation and remote code execution as root. This issue requires group administrator access. The impact is lower in Windows deployments.

Patch / fix

fixed in 1

solarwinds serv-u 2026.3

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 3 mo ago (2026-07-23)

Exploit prediction

0.79% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.1	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CNA	3.1	4.7	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

Affected products

SolarWinds Serv-U

Classification

Weakness

CWE-639 Authorization Bypass Through User-Controlled Key

References

solarwinds.com /trust-center/security-advisories/CVE-2026-28302
vendor-advisory
documentation.solarwinds.com /en/success_center/servu/content/release_notes/servu_2026-3_release_notes.htm
release-notes

Sources

CVE List CVE-2026-28302
NVD CVE-2026-28302

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary