VulnerabilityAnalyzed
CVE-2026-23732
FreeRDP is a free implementation of the Remote Desktop Protocol.
MEDIUM 5.5EPSS 0.51%
Does this matter?
Lower severity and a low EPSS score (0.51%). Track it; it rarely justifies an emergency change on its own.
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 4.0
- 5.5 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.51% probability · 42th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-122
- Affected
- freerdp/freerdp
- Source
- security-advisories@github.com
References
- https://github.com/FreeRDP/FreeRDP/blob/f96ee2a6dd02739325c2a4e36a14978b561f00ea/libfreerdp/cache/glyph.c#L463-L480Product
- https://github.com/FreeRDP/FreeRDP/blob/f96ee2a6dd02739325c2a4e36a14978b561f00ea/libfreerdp/codec/color.c#L261-L277Product
- https://github.com/FreeRDP/FreeRDP/blob/f96ee2a6dd02739325c2a4e36a14978b561f00ea/libfreerdp/core/graphics.c#L138Product
- https://github.com/FreeRDP/FreeRDP/blob/f96ee2a6dd02739325c2a4e36a14978b561f00ea/libfreerdp/core/orders.c#L2186C17-L2199Product
- https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0Release Notes
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-7qxp-j2fj-c3ppExploit, Vendor Advisory
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-7qxp-j2fj-c3ppExploit, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.