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.

The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:75570 advisory.

    * FreeRDP: freerdp-proxy: FreeRDP: Information disclosure via uninitialized heap memory in Save Session     Info PDU (CVE-2026-85089)
      * FreeRDP: FreeRDP: Denial of Service via crafted Surface Bits command (CVE-2026-91954)
      * FreeRDP: FreeRDP: Remote code execution via heap buffer overflow in Server Redirection PDU     (CVE-2026-91964)
      * FreeRDP: FreeRDP: Information Disclosure via RDPGFX ResetGraphics PDU (CVE-2026-91946)
      * FreeRDP: FreeRDP: Denial of Service via out-of-bounds read in URBDRC channel (CVE-2026-91956)
      * FreeRDP: FreeRDP: Remote code execution via uninitialized heap memory disclosure (CVE-2026-91963)
      * FreeRDP: FreeRDP: Use-after-free vulnerability in DRDYNVC parser leads to memory corruption     (CVE-2026-91947)
      * FreeRDP: FreeRDP: Denial of Service due to buffer over-read in RPC gateway (CVE-2026-91959)
      * FreeRDP: FreeRDP: Out-of-bounds read leads to denial of service or information disclosure     (CVE-2026-91950)
      * FreeRDP: FreeRDP: Denial of Service via integer overflow and double free in WinPR (CVE-2026-91960)
      * FreeRDP: FreeRDP: Heap buffer overflow via oversized LB_LOAD_BALANCE_INFO routing token can lead to     heap corruption. (CVE-2026-91953)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Rocky Linux 10.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-2026_75570 advisory.

    * FreeRDP: freerdp-proxy: FreeRDP: Information disclosure via uninitialized heap memory in Save Session     Info PDU (CVE-2026-85089)

    * FreeRDP: FreeRDP: Denial of Service via crafted Surface Bits command (CVE-2026-91954)

    * FreeRDP: FreeRDP: Remote code execution via heap buffer overflow in Server Redirection PDU     (CVE-2026-91964)

    * FreeRDP: FreeRDP: Information Disclosure via RDPGFX ResetGraphics PDU (CVE-2026-91946)

    * FreeRDP: FreeRDP: Denial of Service via out-of-bounds read in URBDRC channel (CVE-2026-91956)

    * FreeRDP: FreeRDP: Remote code execution via uninitialized heap memory disclosure (CVE-2026-91963)

    * FreeRDP: FreeRDP: Use-after-free vulnerability in DRDYNVC parser leads to memory corruption     (CVE-2026-91947)

    * FreeRDP: FreeRDP: Denial of Service due to buffer over-read in RPC gateway (CVE-2026-91959)

    * FreeRDP: FreeRDP: Out-of-bounds read leads to denial of service or information disclosure     (CVE-2026-91950)

    * FreeRDP: FreeRDP: Denial of Service via integer overflow and double free in WinPR (CVE-2026-91960)

    * FreeRDP: FreeRDP: Heap buffer overflow via oversized LB_LOAD_BALANCE_INFO routing token can lead to heap     corruption. (CVE-2026-91953)

Tenable has extracted the preceding description block directly from the CIQ security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-75570 advisory.

    [2:3.10.3-12.14]
    - Backport several CVE fixes (CVE-2026-85089, CVE-2026-91946, CVE-2026-91947,       CVE-2026-91950, CVE-2026-91953, CVE-2026-91954, CVE-2026-91956,       CVE-2026-91959, CVE-2026-91960, CVE-2026-91963, CVE-2026-91964)       Resolves: RHEL-253892, RHEL-260716, RHEL-260750, RHEL-260763, RHEL-260778       Resolves: RHEL-260794, RHEL-260807, RHEL-260842, RHEL-260856, RHEL-260891       Resolves: RHEL-260912

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:75570 advisory.

    * FreeRDP: freerdp-proxy: FreeRDP: Information disclosure via uninitialized heap memory in Save Session     Info PDU (CVE-2026-85089)

    * FreeRDP: FreeRDP: Denial of Service via crafted Surface Bits command (CVE-2026-91954)

    * FreeRDP: FreeRDP: Remote code execution via heap buffer overflow in Server Redirection PDU     (CVE-2026-91964)

    * FreeRDP: FreeRDP: Information Disclosure via RDPGFX ResetGraphics PDU (CVE-2026-91946)

    * FreeRDP: FreeRDP: Denial of Service via out-of-bounds read in URBDRC channel (CVE-2026-91956)

    * FreeRDP: FreeRDP: Remote code execution via uninitialized heap memory disclosure (CVE-2026-91963)

    * FreeRDP: FreeRDP: Use-after-free vulnerability in DRDYNVC parser leads to memory corruption     (CVE-2026-91947)

    * FreeRDP: FreeRDP: Denial of Service due to buffer over-read in RPC gateway (CVE-2026-91959)

    * FreeRDP: FreeRDP: Out-of-bounds read leads to denial of service or information disclosure     (CVE-2026-91950)

    * FreeRDP: FreeRDP: Denial of Service via integer overflow and double free in WinPR (CVE-2026-91960)

    * FreeRDP: FreeRDP: Heap buffer overflow via oversized LB_LOAD_BALANCE_INFO routing token can lead to heap     corruption. (CVE-2026-91953)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:75570 advisory.

    FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license.
    The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox.

    Security Fix(es):

    * FreeRDP: freerdp-proxy: FreeRDP: Information disclosure via uninitialized heap memory in Save Session     Info PDU (CVE-2026-85089)

    * FreeRDP: FreeRDP: Denial of Service via crafted Surface Bits command (CVE-2026-91954)

    * FreeRDP: FreeRDP: Remote code execution via heap buffer overflow in Server Redirection PDU     (CVE-2026-91964)

    * FreeRDP: FreeRDP: Information Disclosure via RDPGFX ResetGraphics PDU (CVE-2026-91946)

    * FreeRDP: FreeRDP: Denial of Service via out-of-bounds read in URBDRC channel (CVE-2026-91956)

    * FreeRDP: FreeRDP: Remote code execution via uninitialized heap memory disclosure (CVE-2026-91963)

    * FreeRDP: FreeRDP: Use-after-free vulnerability in DRDYNVC parser leads to memory corruption     (CVE-2026-91947)

    * FreeRDP: FreeRDP: Denial of Service due to buffer over-read in RPC gateway (CVE-2026-91959)

    * FreeRDP: FreeRDP: Out-of-bounds read leads to denial of service or information disclosure     (CVE-2026-91950)

    * FreeRDP: FreeRDP: Denial of Service via integer overflow and double free in WinPR (CVE-2026-91960)

    * FreeRDP: FreeRDP: Heap buffer overflow via oversized LB_LOAD_BALANCE_INFO routing token can lead to heap     corruption. (CVE-2026-91953)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2026-91960)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
363936	AlmaLinux 10 : freerdp (ALSA-2026:75570)	Nessus	Alma Linux Local Security Checks	Local	high
363852	Rocky Linux 10.2 [CIQ] Security Update: freerdp / freerdp-debuginfo / freerdp-debugsource / freerdp-devel / etc Multiple Vulnerabilities (crlsa-2026_75570)	Nessus	Rocky Linux Local Security Checks	Local	high
363371	Oracle Linux 10 : freerdp (ELSA-2026-75570)	Nessus	Oracle Linux Local Security Checks	Local	high
363140	RockyLinux 10 : freerdp (RLSA-2026:75570)	Nessus	Rocky Linux Local Security Checks	Local	high
362966	RHEL 10 : freerdp (RHSA-2026:75570)	Nessus	Red Hat Local Security Checks	Local	high
345999	Linux Distros Unpatched Vulnerability : CVE-2026-91960	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-91960

high

Tenable Plugins

high

high

high

high

high

high