Red Hat Enterprise Linux 6/7/8/9 libsoup append_param_quoted buffer under-read

Summaryinfo

A vulnerability labeled as critical has been found in Red Hat Enterprise Linux 6/7/8/9. Affected is the function append_param_quoted of the component libsoup. Such manipulation leads to buffer under-read. This vulnerability is documented as CVE-2025-32050. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Red Hat Enterprise Linux 6/7/8/9. It has been rated as critical. Affected by this issue is the function append_param_quoted of the component libsoup. The manipulation with an unknown input leads to a buffer under-read vulnerability. Using CWE to declare the problem leads to CWE-127. The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations prior to the targeted buffer. Impacted is availability. CVE summarizes:

A flaw was found in libsoup. The libsoup append_param_quoted() function may contain an overflow bug resulting in a buffer under-read.

The advisory is shared for download at access.redhat.com. This vulnerability is handled as CVE-2025-32050 since 04/03/2025. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 01/04/2026).

The vulnerability scanner Nessus provides a plugin with the ID 234139 (Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 24.10 : libsoup vulnerabilities (USN-7432-1)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (234139), EUVD (EUVD-2025-9633) and CERT Bund (WID-SEC-2025-0935). Once again VulDB remains the best source for vulnerability data.

Affected

• Amazon Linux 2
• Red Hat Enterprise Linux
• Fedora Linux
• Ubuntu Linux
• SUSE Linux
• Oracle Linux
• IGEL OS
• IBM Power Hardware Management Console
• SUSE openSUSE
• Xerox FreeFlow Print Server

Productinfo

Type

• Operating System

Vendor

• Red Hat

Name

• Enterprise Linux

Version

• 6
• 7
• 8
• 9

License

• commercial

Website

• Vendor: https://www.redhat.com/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Once again VulDB remains the best source for vulnerability data.

Discussion