FFmpeg 8.0 libswscale/output.c yuv2ya16_X_c_template integer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in FFmpeg 8.0. It has been rated as critical. This issue affects the function yuv2ya16_X_c_template of the file libswscale/output.c. Performing a manipulation results in integer overflow. This vulnerability is reported as CVE-2025-63757. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in FFmpeg 8.0. It has been classified as critical. This affects the function yuv2ya16_X_c_template of the file libswscale/output.c. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Integer overflow vulnerability in the yuv2ya16_X_c_template function in libswscale/output.c in FFmpeg 8.0.

It is possible to read the advisory at code.ffmpeg.org. This vulnerability is uniquely identified as CVE-2025-63757 since 10/27/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/21/2025).

The vulnerability scanner Nessus provides a plugin with the ID 279272 (Linux Distros Unpatched Vulnerability : CVE-2025-63757), 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 (279272) and CERT Bund (WID-SEC-2025-2740). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Open Source ffmpeg

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 279272
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-63757

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/27/2025 CVE reserved
12/18/2025 +52 days Advisory disclosed
12/18/2025 +0 days VulDB entry created
12/21/2025 +3 days VulDB entry last update

Sourcesinfo

Product: ffmpeg.org

Advisory: code.ffmpeg.org
Status: Confirmed

CVE: CVE-2025-63757 (🔒)
GCVE (CVE): GCVE-0-2025-63757
GCVE (VulDB): GCVE-100-337407
CERT Bund: WID-SEC-2025-2740 - ffmpeg: Schwachstelle ermöglicht nicht spezifizierten Angriff

Entryinfo

Created: 12/18/2025 17:29
Updated: 12/21/2025 01:35
Changes: 12/18/2025 17:29 (53), 12/19/2025 08:26 (2), 12/21/2025 01:35 (7)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

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