SUSE SLES15 Security Update : freerdp (SUSE-SU-2026:0656-1)

high Nessus Plugin ID 300382

Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0656-1 advisory.

- CVE-2026-22855: heap-buffer-overflow in smartcard_unpack_set_attrib_call (bsc#1256721).
- CVE-2026-22857: heap-use-after-free in irp_thread_func (bsc#1256723).
- CVE-2026-23533: improper validation can lead to heap buffer overflow in `clear_decompress_residual_data` (bsc#1256943).
- CVE-2026-23732: improper validation can lead to heap buffer overflow in `Glyph_Alloc` (bsc#1256945).
- CVE-2026-23883: use-after-free when `update_pointer_color` and `freerdp_image_copy_from_pointer_data` fail (bsc#1256946).
- CVE-2026-23884: use-after-free in `gdi_set_bounds` (bsc#1256947).

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

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

Solution

Update the affected libfreerdp2 and / or libwinpr2 packages.

Plugin Details

Severity: High

ID: 300382

File Name: suse_SU-2026-0656-1.nasl

Version: 1.1

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 3/3/2026

Updated: 3/3/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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-2026-23884

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: High

Base Score: 8.7

Threat Score: 7.7

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:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:libfreerdp2, cpe:/o:novell:suse_linux:15, p-cpe:/a:novell:suse_linux:libwinpr2

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/26/2026

Vulnerability Publication Date: 1/14/2026

Reference Information

CVE: CVE-2026-22855, CVE-2026-22857, CVE-2026-23533, CVE-2026-23732, CVE-2026-23883, CVE-2026-23884

SuSE: SUSE-SU-2026:0656-1

Detections

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