GPAC 26.03-DEV MP4Box vobsub.c vobsub_read_idx num_langs out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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3.0$0-$5k1.05+

Summaryinfo

A vulnerability was found in GPAC 26.03-DEV. It has been rated as problematic. This impacts the function vobsub_read_idx of the file /src/media_tools/vobsub.c of the component MP4Box. The manipulation of the argument num_langs leads to out-of-bounds. This vulnerability is documented as CVE-2026-15185. The attack needs to be performed locally. Additionally, an exploit exists. It is recommended to apply a patch to fix this issue. Two different commits were applied to fix this issue.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in GPAC 26.03-DEV. This issue affects the function vobsub_read_idx of the file /src/media_tools/vobsub.c of the component MP4Box. The manipulation of the argument num_langs with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is availability.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-15185. The exploitation is known to be easy. Attacking locally is a requirement. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept. Two different commits were applied to fix this issue.

Applying the patch 532097084729a936bcdf6a27c41003f3bd7dc3ff is able to eliminate this problem. The bugfix is ready for download at github.com.

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

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.0

VulDB Base Score: 3.3
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
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: 532097084729a936bcdf6a27c41003f3bd7dc3ff

Timelineinfo

07/09/2026 Advisory disclosed
07/09/2026 +0 days VulDB entry created
07/09/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 3611
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2026-15185 (🔒)
GCVE (CVE): GCVE-0-2026-15185
GCVE (VulDB): GCVE-100-377111
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/09/2026 07:08
Changes: 07/09/2026 07:08 (63)
Complete: 🔍
Submitter: Fantasy_2026
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #851214: GPAC GPAC 26.03-DEV Out-of-Bounds Read (by Fantasy_2026)

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