What is CVE-2025-2777?

CVE-2025-2777 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-2025-2777?

Critical severity. CVSS v3 base score is 9.3 out of 10.

Is CVE-2025-2777 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XXE in Sysaid

CVE-2025-2777

SysAid On-Prem versions <= 23.3.40 are vulnerable to an unauthenticated XML External Entity (XXE) vulnerability in the lshw processing functionality, allowing for administrator account takeover and file read primitives.

Vulnerability class: XXE (XML External Entity)

EPSS: 0.795 (99.6th 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)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

Public proof-of-concept exploits

References

disclosure@vulncheck.com (vendor-advisory, Release Notes)
disclosure@vulncheck.com (Exploit, Third Party Advisory, exploit)

Frequently asked questions

What is CVE-2025-2777?: CVE-2025-2777 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-2025-2777?: Critical severity. CVSS v3 base score is 9.3 out of 10.
Is CVE-2025-2777 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.