CVEs / CVE-2025-2776

CVE-2025-2776: SysAid On-Prem Improper Restriction of XML External Entity Reference Vulnerability

Known exploited in the CISA KEV catalog since 22 Jul 2025
critical 9.8 CVSS 3.1 (NVD)
EPSS 64.7% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
Last changed at its sources 17 Jun 2026

Are you affected? Check your servers with Stackurity: it lists the software on each server and the vulnerabilities to fix first.

Check your servers with Stackurity Already using Stackurity? Search for CVE-2025-2776

Summary

SysAid On-Prem contains an improper restriction of XML external entity reference vulnerability in the Server URL processing functionality, allowing for administrator account takeover and file read primitives.
CISA, Known Exploited Vulnerabilities catalog

Description

SysAid On-Prem versions <= 23.3.40 are vulnerable to an unauthenticated XML External Entity (XXE) vulnerability in the Server URL processing functionality, allowing for administrator account takeover and file read primitives.
The CVE record, via NVD · published 7 May 2025 · NVD status: Analyzed

Affected and fixed versions

As stated by the CVE record (from the CNA)
Product	Affected	Fixed in
SysAid SysAid On-Prem	up to and including 23.3.40	—

Exploitation

In CISA KEV since	22 Jul 2025
Due date for US federal agencies	12 Aug 2025
Used in ransomware campaigns	Unknown
Required action	Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Severity

CVSS 3.1	9.8 critical `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H` Scored by NVD
Weakness	CWE-611

References

CVE-2025-2776 on NVD
CVE-2025-2776 in the CISA KEV catalog
https://documentation.sysaid.com/docs/24-40-60 (cited by CISA)
https://documentation.sysaid.com/docs/24-40-60 Release Notes
https://labs.watchtowr.com/sysowned-your-friendly-rce-support-ticket/ Exploit, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-2776 US Government Resource

Sources

Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.

This product uses data from the NVD API but is not endorsed or certified by the NVD.