FFmpeg libswscale libswscale/output.c hScale16To19_c integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.63

Summaryinfo

A vulnerability, which was classified as problematic, has been found in FFmpeg. This issue affects the function hScale16To19_c of the file libswscale/output.c of the component libswscale. Performing a manipulation results in integer overflow. This vulnerability is identified as CVE-2026-38349. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in FFmpeg (affected version unknown). It has been classified as problematic. This affects the function hScale16To19_c of the file libswscale/output.c of the component libswscale. 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 availability. The summary by CVE is:

An integer overflow in the hScale16To19_c() function (libswscale/output.c) of FFmpeg N-122528-gdd2976b9e1 allows attackers to cause a Denial of Service (DoS) via supplying a crafted image file.

It is possible to read the advisory at code.ffmpeg.org. This vulnerability is uniquely identified as CVE-2026-38349 since 04/06/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit.

Applying the patch dd2976b9e1 is able to eliminate this problem.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
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
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: dd2976b9e1

Timelineinfo

04/06/2026 CVE reserved
08/27/2026 +143 days VulDB entry created
08/28/2026 +0 days Advisory disclosed
08/28/2026 +0 days VulDB entry last update

Sourcesinfo

Product: ffmpeg.org

Advisory: code.ffmpeg.org
Status: Confirmed

CVE: CVE-2026-38349 (🔒)
GCVE (CVE): GCVE-0-2026-38349
GCVE (VulDB): GCVE-100-396411

Entryinfo

Created: 08/28/2026 01:32
Changes: 08/28/2026 01:32 (55)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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