Vulnerability Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, FastGlyph parsing trusts `cbData`/remaining length and never validates against the minimum size implied by `cx/cy`. A malicious server can trigger a client‑side global buffer overflow, causing a crash (DoS). Version 3.21.0 contains a patch for the issue.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Freerdp | Freerdp | < 3.21.0 |
Related Weaknesses (CWE)
References
- https://github.com/FreeRDP/FreeRDP/blob/f96ee2a6dd02739325c2a4e36a14978b561f00eaProduct
- https://github.com/FreeRDP/FreeRDP/blob/f96ee2a6dd02739325c2a4e36a14978b561f00eaProduct
- https://github.com/FreeRDP/FreeRDP/blob/f96ee2a6dd02739325c2a4e36a14978b561f00eaProduct
- https://github.com/FreeRDP/FreeRDP/blob/f96ee2a6dd02739325c2a4e36a14978b561f00eaProduct
- https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0Release Notes
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-7qxp-j2fj-c3ppExploitVendor Advisory
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-7qxp-j2fj-c3ppExploitVendor Advisory
FAQ
What is CVE-2026-23732?
CVE-2026-23732 is a vulnerability with a CVSS score of 7.5 (HIGH). FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, FastGlyph parsing trusts `cbData`/remaining length and never validates against the minimum size implied by `cx...
How severe is CVE-2026-23732?
CVE-2026-23732 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-23732?
Check the references section above for vendor advisories and patch information. Affected products include: Freerdp Freerdp.