SysAid On-Prem Improper Restriction of XML External Entity Reference Vulnerability
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.
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 4 / 5
- KEV catalog (CISA)22 Jul 2025
- Exploited in EUVD (ENISA)22 Jul 2025
- Used by ransomwareno
- EPSS above 10 %42.6%
- No account, over the networkyes
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Affected products
- 0 ≤23.3.40
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
-
Published
-
Exploitation reported (ENISA)
-
Added to the KEV catalog
-
CISA remediation due date
-
EPSS peak: 43.0%
References
Other exploited vulnerabilities from the same vendor
- CVE-2025-2776SysAid On-Prem Improper Restriction of XML External Entity Reference Vulnerability8.1 · Background exploitation
- CVE-2023-47246SysAid Server Path Traversal Vulnerability9.9 · Background exploitation