CVE-2026-121395

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    CVE-2026-121395

    Published: 3 Nov 2026Last Modified: 5 Nov 2026

    Summary: FreeRDP 3.17.0 before 3.32.2 Denial of Service via RemoteFX Decoder

    Details: FreeRDP from 3.17.0 before 3.32.2 contains an assertion failure in the RemoteFX differential decoder when verbose WinPR assertions are enabled. A malicious RDP server can send a crafted RemoteFX tile with adjacent LL3 coefficients summing beyond signed 16-bit range to abort the client process.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/121xxx/CVE-2026-121395.json, https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-cg4f-57hc-v7w7, https://nvd.nist.gov/vuln/detail/CVE-2026-121395, https://www.vulncheck.com/advisories/freerdp-3.17.0-before-3.32.2-denial-of-service-via-remotefx-decoder

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 15b1b9829346f5e551eafe3e6b18bbafa187c64f
    Fixed -97eff6ddfbbfaa8e42a126d362686bd001ff8bdc

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-121395 | CVE-DB