Security readout for executives and security teams
Plain-English summary
CVE-2025-2776 is a critical unauthenticated flaw in SysAid On-Prem Server URL processing. A remote attacker could abuse XML parsing behavior to read files and take over an administrator account. Because CISA lists it as known exploited, exposed SysAid On-Prem systems should be treated as urgent remediation targets.
Executive priority
Prioritize this as an emergency patch and exposure-reduction item for any SysAid On-Prem deployment. The combination of unauthenticated remote access, administrator takeover impact, and CISA KEV status makes delay materially risky.
Technical view
The issue is an XML External Entity injection vulnerability in SysAid On-Prem versions up to 23.3.40. The CVSS 3.1 score is 9.3: network-accessible, low complexity, no privileges, and no user interaction. Sources state it can provide file-read primitives and administrator account takeover.
Likely exposure
Organizations running SysAid On-Prem version 23.3.40 or earlier are in scope, especially if the service is internet-facing or reachable by untrusted networks. The source bundle does not identify SysAid Cloud or other SysAid products as affected.
Exploitation context
Active exploitation is supported by CISA KEV listing. A public watchTowr Labs write-up is also cited as exploit-related research. The provided sources do not include safe operational indicators or full remediation detail beyond vendor guidance.
Researcher notes
Evidence is strong for affected product, vulnerability class, severity, and exploited status. The bundle does not provide detailed indicators, a complete affected-version matrix beyond <=23.3.40, or specific fixed-version wording. Avoid extrapolating beyond SysAid On-Prem.
Mitigation direction
- Apply SysAid vendor guidance for CVE-2025-2776 immediately.
- Upgrade affected SysAid On-Prem deployments according to SysAid’s advisory.
- Restrict network access to SysAid On-Prem until remediation is complete.
- Review and revoke unexpected administrator accounts or privilege changes.
- Rotate credentials if compromise is suspected.
Validation and detection
- Inventory all SysAid On-Prem deployments and record versions.
- Confirm whether any instance runs version 23.3.40 or earlier.
- Verify internet or partner-network exposure for each instance.
- Review logs for unexpected administrator changes and suspicious XML processing activity.
- Confirm the vendor-recommended update or mitigation is applied.
Public sources used
Michael Williams reviewed this cited source version on .
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CWE-611: Exact CWE lookup
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Open ATT&CK lookupCVE-2025-2776 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.3 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L3.94.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.3CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://documentation.sysaid.com/docs/24-40-60CVE reference · vendor-advisory
- https://labs.watchtowr.com/sysowned-your-friendly-rce-support-ticket/CVE reference · exploit
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-2776CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Restriction of XML External Entity Reference
Improper Restriction of XML External Entity Reference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.