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Linux Distros Unpatched Vulnerability : CVE-2025-4516

high Nessus Plugin ID 252065

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.

 - There is an issue in CPython when using `bytes.decode(unicode_escape, error=ignore|replace)`. If you are not using the unicode_escape encoding or an error handler your usage is not affected. To work-around this issue you may stop using the error= handler and instead wrap the bytes.decode() call in a try-except catching the DecodeError. (CVE-2025-4516)

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://security-tracker.debian.org/tracker/CVE-2025-4516

https://ubuntu.com/security/CVE-2025-4516

Plugin Details

Severity: High

ID: 252065

File Name: unpatched_CVE_2025_4516.nasl

Version: 1.1

Type: local

Agent: unix

Family: Misc.

Published: 8/19/2025

Updated: 8/19/2025

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2025-4516

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:python3.9, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:python3.11, cpe:/o:debian:debian_linux:12.0, p-cpe:/a:debian:debian_linux:python3.11

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 5/15/2025

Reference Information

CVE: CVE-2025-4516