Alpine: multiple freerdp packages: security update to 3.23.0-r0

medium Tenable Self-Hosted Container Security Plugin ID 438173

Description

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

- FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0,
`xf_clipboard_format_equal` reads freed `lastSentFormats` memory because `xf_clipboard_formats_free`
(called from the cliprdr channel thread during auto-reconnect) frees the array while the X11 event thread
concurrently iterates it in `xf_clipboard_changed`, triggering a heap use after free. Version 3.23.0 fixes
the issue. (CVE-2026-25997)

- FreeRDP is a free implementation of the Remote Desktop Protocol. Versions on the 2.x branch prior to to
2.11.8 and on the 3.x branch prior to 3.23.0 have an out-of-bounds read vulnerability in the FreeRDP
client's RDPGFX channel that allows a malicious RDP server to read uninitialized heap memory by sending a
crafted WIRE_TO_SURFACE_2 PDU with a `bitmapDataLength` value larger than the actual data in the packet.
This can lead to information disclosure or client crashes when a user connects to a malicious server.
Versions 2.11.8 and 3.23.0 fix the issue. (CVE-2026-25941)

- FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0,
`xf_rail_server_execute_result` indexes the global `error_code_names[]` array (7 elements, indices 0–6)
with an unchecked `execResult->execResult` value received from the server, allowing an out-of-bounds read
when the server sends an `execResult` value of 7 or greater. Version 3.23.0 fixes the issue.
(CVE-2026-25942)

- FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0,
`xf_SetWindowMinMaxInfo` dereferences a freed `xfAppWindow` pointer because `xf_rail_get_window` in
`xf_rail_server_min_max_info` returns an unprotected pointer from the `railWindows` hash table, and the
main thread can concurrently delete the window (via a window delete order) while the RAIL channel thread
is still using the pointer. Version 3.23.0 fixes the issue. (CVE-2026-25952)

- FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0,
`xf_AppUpdateWindowFromSurface` reads from a freed `xfAppWindow` because the RDPGFX DVC thread obtains a
bare pointer via `xf_rail_get_window` without any lifetime protection, while the main thread can
concurrently delete the window through a fastpath window-delete order. Version 3.23.0 fixes the issue.
(CVE-2026-25953)

Plugin Details

Severity: Medium

ID: 438173

Version: Revision 1.25

Type: Local

Family: Alpine Linux Local Security Checks

Published: 3/4/2026

Updated: 6/26/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.73

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-25997

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 5.5

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-26271

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 2/25/2026

Reference Information

CVE: CVE-2026-25941, CVE-2026-25942, CVE-2026-25952, CVE-2026-25953, CVE-2026-25954, CVE-2026-25955, CVE-2026-25959, CVE-2026-25997, CVE-2026-26271, CVE-2026-26955, CVE-2026-26965

Detections

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