CVE Feed

    Dashboard / CVE / CVE-2026-91960

    CVE-2026-91960

    FreeRDP versions before 3.31.0 contain an integer overflow in WinPR's Stream_EnsureRemainingCapacity function that allows remote attackers to cause denial of service. A malicious RD Gateway peer can send a WebSocket Ping frame with a crafted 64-bit extended payload length to trigger integer wraparound, resulting in a double free that crashes the FreeRDP client during connection.

    Published:Sep 15, 2026
    Last Modified:Sep 15, 2026
    EPS:Sep 15, 2026
    EPSS Score:
    CVSS Score:6.5

    Affected Products

    Vendor
    Freerdp
    Product
    Freerdp

    Exploits

    https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-vccg-35r5-8jrfhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-vccg-35r5-8jrf

    Common Weakness Enumeration

    CWE-190 Integer Overflow or Wraparound

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

    CVE-2026-125394 (CVSS 5.4) — FreeRDP before 3.33.0 contains a heap use-after-free vulnerability in update_gdi_patblt(), update_gdi_polygon_…
    CVE-2026-121964 (CVSS 8.7) — FreeRDP before 3.32.2 contains a heap-based buffer overflow in the RD Gateway RPC client, where rpc_client_rec…
    CVE-2026-121962 (CVSS 7.2) — FreeRDP before 3.32.2 contains a heap buffer overflow in transport_default_read_pdu when handling partial Earl…
    CVE-2026-121963 (CVSS 8.2) — FreeRDP before 3.32.2 contains a use-after-free vulnerability in the asynchronous dynamic rdpsnd channel that …
    CVE-2026-121961 (CVSS 8.2) — FreeRDP before 3.32.2 contains a use-after-free vulnerability in the freerdp-proxy DRDYNVC tracker when interc…
    CVE-2026-121960 (CVSS 8.7) — FreeRDP before 3.32.2 contains a denial of service vulnerability in the NLA-enabled shadow server when a CredS…
    CVE-2026-121959 (CVSS 7.1) — FreeRDP before 3.32.2 contains an infinite loop vulnerability in websocket_context_read that fails to handle a…
    CVE-2026-121958 (CVSS 8.7) — FreeRDP through 3.32.1 has a heap out-of-bounds write in the RDPGFX client because the delete_surface callback…
    CVE-2026-121957 (CVSS 8.7) — FreeRDP before 3.32.2 contains a use-after-free vulnerability that allows malicious RDP servers to corrupt cli…
    CVE-2026-121955 (CVSS 8.7) — FreeRDP before 3.32.2 contains a use-after-free vulnerability in Emulate_SCardReleaseContext that frees the em…

    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