CVE-2026-28313 — CRITICAL (9.1)

Q: How severe is CVE-2026-28313?

CVE-2026-28313 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2026-28313?

Check the references section above for vendor advisories and patch information. Affected products include: Solarwinds Serv-U.

Vulnerability Description

SolarWinds Serv-U is affected by an insecure direct object reference (IDOR) vulnerability that can lead to SMTP hijacking leading to arbitrary account takeover. The impact is lower in Windows deployments.

CVSS Score

9.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Solarwinds	Serv-U	< 2026.3

Related Weaknesses (CWE)

CWE-639

References

https://documentation.solarwinds.com/en/success_center/servu/content/release_notRelease NotesVendor Advisory
https://https://www.solarwinds.com/trust-center/security-advisories/CVE-2026-283Vendor Advisory

FAQ

What is CVE-2026-28313?

CVE-2026-28313 is a vulnerability with a CVSS score of 9.1 (CRITICAL). SolarWinds Serv-U is affected by an insecure direct object reference (IDOR) vulnerability that can lead to SMTP hijacking leading to arbitrary account takeover. The impact is lower in Windows deployme...

How severe is CVE-2026-28313?

CVE-2026-28313 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-28313?

Check the references section above for vendor advisories and patch information. Affected products include: Solarwinds Serv-U.