FFmpeg Firequalizer filter af_firequalizer.c config_input null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in FFmpeg. This impacts the function config_input of the file libavfilter/af_firequalizer.c of the component Firequalizer filter. Such manipulation leads to null pointer dereference. This vulnerability is listed as CVE-2025-10256. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in FFmpeg (affected version unknown) and classified as problematic. Affected by this issue is the function config_input of the file libavfilter/af_firequalizer.c of the component Firequalizer filter. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. CVE summarizes:

A NULL pointer dereference vulnerability exists in FFmpeg’s Firequalizer filter (libavfilter/af_firequalizer.c) due to a missing check on the return value of av_malloc_array() in the config_input() function. An attacker could exploit this by tricking a victim into processing a crafted media file with the Firequalizer filter enabled, causing the application to dereference a NULL pointer and crash, leading to denial of service.

The advisory is available at bugzilla.redhat.com. This vulnerability is handled as CVE-2025-10256. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 264693 (Linux Distros Unpatched Vulnerability : CVE-2025-10256), 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 vulnerability database at Tenable (264693). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 5.0

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CNA Base Score: 5.3
CNA Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 264693
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-10256

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/11/2025 Advisory disclosed
09/11/2025 +0 days VulDB entry created
02/27/2026 +169 days VulDB entry last update

Sourcesinfo

Product: ffmpeg.org

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2025-10256 (🔒)
GCVE (CVE): GCVE-0-2025-10256
GCVE (VulDB): GCVE-100-323618

Entryinfo

Created: 09/11/2025 09:14
Updated: 02/27/2026 06:22
Changes: 09/11/2025 09:14 (51), 09/15/2025 02:50 (2), 02/27/2026 06:22 (21)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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