CVE-2025-2776

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.

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1

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

EPSS

64.40% chance of exploitation in the next 30 days, 99th percentile

CISA KEV

added 2025-07-22

Nuclei

critical · CWE-611

Published

2025-05-07

Updated

2025-11-19

Proof-of-concept exploits (4)

• https://labs.watchtowr.com/sysowned-your-friendly-rce-support-ticket/
• 0xgh057r3c0n/SysAid-PreAuth-RCE-Chain0★ · 2025-07-26
• mrk336/From-EternalBlue-to-CVE-2025-2776-The-Evolution-of-an-SMB-Attack0★ · 2025-08-31
• watchtowrlabs/watchTowr-vs-SysAid-PreAuth-RCE-Chain12★ · 2025-03-28

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-2776.yaml

References

• CVE Record
• NVD entry

Related

• CVE-2025-13486
• CVE-2025-25257
• CVE-2025-2775
• CVE-2025-2777
• CVE-2025-3102
• CVE-2025-31125