Detections
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Linux Distros Unpatched Vulnerability : CVE-2026-33987
medium Nessus Plugin ID 303834
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Synopsis
The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.Description
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.- FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in persistent_cache_read_entry_v3() in libfreerdp/cache/persistent.c, persistent->bmpSize is updated before winpr_aligned_recalloc(). If realloc fails, bmpSize is inflated while bmpData points to the old buffer.
This issue has been patched in version 3.24.2. (CVE-2026-33987)
Note that Nessus relies on the presence of the package as reported by the vendor.
Solution
There is no known solution at this time.See Also
https://access.redhat.com/security/cve/cve-2026-33987
Plugin Details
Severity: Medium
ID: 303834
File Name: unpatched_CVE_2026_33987.nasl
Version: 1.12
Type: Local
Agent: unix
Family: Misc.
Published: 3/26/2026
Updated: 5/22/2026
Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.2
CVSS v2
Risk Factor: Medium
Base Score: 4.9
Temporal Score: 4.2
Vector: CVSS2#AV:N/AC:M/Au:S/C:N/I:P/A:P
CVSS Score Source: CVE-2026-33987
CVSS v3
Risk Factor: Medium
Base Score: 6.6
Temporal Score: 6.1
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C
Vulnerability Information
CPE: p-cpe:/a:debian:debian_linux:freerdp2, cpe:/o:debian:debian_linux:11.0, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:25.10, p-cpe:/a:canonical:ubuntu_linux:freerdp, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:redhat:enterprise_linux:freerdp, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:canonical:ubuntu_linux:freerdp3, p-cpe:/a:canonical:ubuntu_linux:freerdp2, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:redhat:enterprise_linux:freerdp-plugins, cpe:/o:debian:debian_linux:12.0, p-cpe:/a:redhat:enterprise_linux:freerdp-devel, p-cpe:/a:redhat:enterprise_linux:freerdp-libs
Required KB Items: Host/cpu, Host/local_checks_enabled, global_settings/vendor_unpatched, Host/OS/identifier
Exploit Ease: No known exploits are available
Reference Information
CVE: CVE-2026-33987