Security Digest · Vulnerability record · Known exploited
CVE-2025-2776: SysAid On-Prem Improper Restriction of XML External Entity Reference Vulnerability
Exploited in the wild (CISA KEV). SysAid On-Prem versions
CISA KEV · added 2025-07-22 CVSS 9.3 Critical EPSS 64.7% · p99
Should you act?
Exploited: patch now if you run it
CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- Yes, if you run SysAid SysAid On-Prem. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2025-07-22, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2025-08-12; treat that as the outer limit, not the target.
- EPSS 64.7%, percentile 99: FIRST’s model estimates a 64.7% chance of exploitation activity in the next 30 days, higher than 99% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
What it is
SysAid On-Prem versions
CISA’s 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.
Weakness type: CWE-611.
Product: SysAid SysAid On-Prem · Assigned by: VulnCheck · Published: 2025-05-07
Affected and fixed versions
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| SysAid | SysAid On-Prem | <= 23.3.40 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| VulnCheck | 3.1 | 9.3 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Privileges required: none (no login)
- User interaction: none
- Scope: changed (can affect other components)
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: added 2025-07-22; federal due date 2025-08-12. Known ransomware use: Unknown.
- CISA 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.
- CISA SSVC assessment: exploitation active, automatable yes, technical impact partial.
- FIRST EPSS (model of 2026-10-21): 64.73% probability of exploitation activity in the next 30 days; percentile 99.
Timeline
- — CVE record published by VulnCheck
- — Added to CISA’s Known Exploited Vulnerabilities catalog
- — CISA remediation deadline for US federal agencies
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vendor and project advisories, patches
- documentation.sysaid.com documentation.sysaid.com
Vulnerability records
- CVE.org record CVE-2025-2776 cve.org
- NVD entry CVE-2025-2776 nvd.nist.gov
Government
Other references from the CVE record and advisory
- labs.watchtowr.com labs.watchtowr.com
All exploited SysAid vulnerabilities · Today’s Security Digest