The CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS7:CLSA-2026:1791568721 advisory.

  - FreeRDP versions before 3.31.0 contain a heap buffer overflow vulnerability in     nego_send_negotiation_request() that fails to validate the LB_LOAD_BALANCE_INFO field length before     writing to a fixed 512-byte buffer. A malicious RDP server or man-in-the-middle can send a Server     Redirection PDU with an oversized LB_LOAD_BALANCE_INFO value to overflow the buffer with attacker-     controlled content, causing denial of service or heap corruption before authentication completes.
    (CVE-2026-91953)

  - FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the URBDRC channel's     func_get_ep_desc function that indexes interface arrays by position instead of protocol field     InterfaceNumber. A malicious RDP server can send a crafted SELECT_CONFIGURATION message with permuted     InterfaceNumber values to read past allocated heap memory and crash the client. (CVE-2026-91956)

  - FreeRDP before 3.31.0 contains a use-after-free vulnerability in the smartcard RDPDR device handler when     worker thread creation fails after device registration. Attackers can trigger thread creation failure     during channel setup to cause device pointer deallocation while devman retains a reference, leading to     crash or code execution. (CVE-2026-91957)

  - FreeRDP before 3.31.0 contains a buffer over-read vulnerability in the rts_read_result function within the     RPC gateway transport parser. Attackers can send a malicious BIND_ACK PDU with a truncated result entry to     trigger an out-of-bounds read causing process abort. (CVE-2026-91959)

  - FreeRDP versions before 3.31.0 contain an uninitialized heap memory disclosure vulnerability in the urbdrc     USB redirection channel. A malicious RDP server can induce failing USB transfers to read uninitialized     heap memory from the client, defeating ASLR and enabling remote code execution when chained with memory     corruption vulnerabilities. (CVE-2026-91963)

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

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2026:0326 advisory.

    Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

    CVE-2026-91953:
    FreeRDP versions before 3.31.0 contain a heap buffer overflow vulnerability in     nego_send_negotiation_request() that fails to validate the LB_LOAD_BALANCE_INFO field length before     writing to a fixed 512-byte buffer. A malicious RDP server or man-in-the-middle can send a Server     Redirection PDU with an oversized LB_LOAD_BALANCE_INFO value to overflow the buffer with attacker-     controlled content, causing denial of service or heap corruption before authentication completes.

    CVE-2026-91954:
    FreeRDP before 3.31.0 contains a null pointer dereference vulnerability in gdi_surface_bits when     processing Surface Bits commands with NSCodec codec ID. A malicious RDP server can crash a FreeRDP client     by sending a crafted Surface Bits command claiming to use NSCodec, even when the codec is disabled.

    CVE-2026-91956:
    FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the URBDRC channel's     func_get_ep_desc function that indexes interface arrays by position instead of protocol field     InterfaceNumber. A malicious RDP server can send a crafted SELECT_CONFIGURATION message with permuted     InterfaceNumber values to read past allocated heap memory and crash the client.

    CVE-2026-91959:
    FreeRDP before 3.31.0 contains a buffer over-read vulnerability in the rts_read_result function within the     RPC gateway transport parser. Attackers can send a malicious BIND_ACK PDU with a truncated result entry to     trigger an out-of-bounds read causing process abort.

    CVE-2026-91963:
    FreeRDP versions before 3.31.0 contain an uninitialized heap memory disclosure vulnerability in the urbdrc     USB redirection channel. A malicious RDP server can induce failing USB transfers to read uninitialized     heap memory from the client, defeating ASLR and enabling remote code execution when chained with memory     corruption vulnerabilities.

    CVE-2026-91964:
    FreeRDP versions before 3.31.0 contain a heap-based buffer overflow in nego_send_negotiation_request when     processing Server Redirection PDU messages with attacker-controlled LoadBalanceInfo fields. A malicious     RDP server can trigger the overflow by sending an arbitrary-length field that gets written to a fixed     512-byte buffer without validation, causing client crashes or potential code execution when chained with     memory disclosure.

Tenable has extracted the preceding description block directly from the Alibaba Cloud 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 Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:93559 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: 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: 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 Rocky Linux 10.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-2026_98598 advisory.

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

    * FreeRDP: FreeRDP: Arbitrary code execution via oversized channel messages in SHOW_PROTOCOL     (CVE-2026-91948)

    * 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 3.0.0 through 3.30.0 Protocol Negotiation Bypass (CVE-2026-91949)

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

    * FreeRDP: FreeRDP: Denial of Service via out-of-bounds write in urbdrc client channel (CVE-2026-91951)

    * 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)

    * FreeRDP: FreeRDP: Denial of Service due to out-of-bounds read in smartcard response processing     (CVE-2026-91945)

    * freerdp: FreeRDP: Denial of Service via uninitialized progressive tile handling (CVE-2026-109242)

    * freerdp: FreeRDP 3.0.0-beta1 before 3.32.0 Use-After-Free via Smartcard Connect (CVE-2026-109676)

    * freerdp: FreeRDP: Unauthenticated keystroke injection via premature input dispatch (CVE-2026-110838)

    * freerdp: freerdp: Denial of Service via file descriptor exhaustion in serial device handling     (CVE-2026-110830)

    * freerdp: freerdp: Denial of Service via heap-based buffer overflow during MP3 audio decoding     (CVE-2026-110837)

    * freerdp: freerdp: Denial of Service via unbounded memory consumption during RDPDR reassembly     (CVE-2026-110833)

    * freerdp: FreeRDP: Denial of Service via grayscale JPEG clipboard conversion (CVE-2026-110839)

    * freerdp: freerdp: Denial of Service via memory exhaustion in NLA frame parser (CVE-2026-111378)

    * freerdp: FreeRDP: Arbitrary code execution via crafted persistent cache file (CVE-2026-111379)

    * freerdp: freerdp: Arbitrary code execution via crafted persistent cache file (CVE-2026-111381)

    * freerdp: freerdp: Arbitrary code execution via crafted display frames (CVE-2026-111382)

    * freerdp: freerdp: Denial of Service via heap out-of-bounds write in NTLM authentication     (CVE-2026-111880)

    * freerdp: FreeRDP: heap buffer overflow in server rdpsnd via crafted audio formats (CVE-2026-114045)

    * freerdp: FreeRDP: Denial of Service via malformed image clipboard payloads (CVE-2026-121386)

    * freerdp: freerdp: Denial of Service via zero-width graphics reset (CVE-2026-121402)

    * freerdp: freerdp: Denial of Service via zero-length dynamic virtual channel messages (CVE-2026-121404)

    * freerdp: freerdp: Denial of Service via uncontrolled memory allocation in dynamic virtual channels     (CVE-2026-121388)

    * freerdp: FreeRDP: Denial of Service via assertion failure in RemoteFX decoder (CVE-2026-121394)

    Bug Fix(es) and Enhancement(s):

    * Rebase FreeRDP to 3.32.2 or newer [rhel-10.3.z] (JIRA:Rocky Linux-277443)

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.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
365367	CentOS Linux 7 [TuxCare] Security Update: freerdp / freerdp-devel / freerdp-libs / libwinpr / libwinpr-devel Multiple Vulnerabilities (CENTOS7:CLSA-2026:1791568721)	Nessus	CentOS Local Security Checks	2026/10/13	2026/11/6	high
373504	Alibaba Cloud Linux 3 : 0326: freerdp (ALINUX3-SA-2026:0326)	Nessus	Alibaba Cloud Linux Local Security Checks	2026/10/29	2026/11/6	high
375151	RHEL 7 : freerdp (RHSA-2026:93559)	Nessus	Red Hat Local Security Checks	2026/11/2	2026/11/6	high
381086	Rocky Linux 10.2 [CIQ] Security Update: freerdp / freerdp-debuginfo / freerdp-debugsource / freerdp-devel / etc Multiple Vulnerabilities (crlsa-2026_98598)	Nessus	Rocky Linux Local Security Checks	2026/11/14	2026/11/14	critical

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