XXE in Sysaid
CVE-2025-2775
SysAid On-Prem versions <= 23.3.40 are vulnerable to an unauthenticated XML External Entity (XXE) vulnerability in the Checkin processing functionality, allowing for administrator account takeover and file read primitives.
Vulnerability class: XXE (XML External Entity)
EPSS: 0.546 (98.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.3 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L.
Affected products
- Sysaid
- Sysaid On-prem — versions 0
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
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.
Public proof-of-concept exploits
References
- disclosure@vulncheck.com (vendor-advisory, Release Notes)
- disclosure@vulncheck.com (Exploit, Third Party Advisory, exploit)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2025-2775?
- CVE-2025-2775 is a critical-severity vulnerability in Sysaid, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 9.3/10. Published 2025-05-07.
- How severe is CVE-2025-2775?
- Critical severity. CVSS v3 base score is 9.3 out of 10.
- Is CVE-2025-2775 known to be exploited?
- Yes. CVE-2025-2775 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-07-22), indicating it is being actively exploited. 8 public proof-of-concept repositories are indexed.