CVE-2026-86514
Received Received - Intake

Stack-Based Buffer Overflow in vgmstream

Publication date: 2026-09-08

Last updated on: 2026-09-08

Assigner: VulDB

Description
A weakness has been identified in vgmstream up to r2117. This issue affects the function sscanf of the file src/meta/txth.c of the component txth-txtp. This manipulation causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. Patch name: 4669d37a6af94866f6f0628678f9f90d46954e8b. To fix this issue, it is recommended to deploy a patch.

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Meta Information

Published
2026-09-08
Last Modified
2026-09-08
Generated
2026-09-08
AI Q&A
2026-09-08
EPSS Evaluated
N/A
NVD
CVE-2026-86514
EUVD
EUVD-2026-72615

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
vgmstream vgmstream to r2117 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-119 The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
CWE-121 A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Attack-Flow Graph

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Executive Summary

This vulnerability is a stack-based buffer overflow in vgmstream up to r2117, specifically in the function sscanf within src/meta/txth.c. It occurs when parsing TXTH or TXTP text files, where sscanf copies attacker-controlled input into fixed-size stack buffers without proper bounds checking. This can cause application crashes or potentially enable code execution in applications using vgmstream.

Detection Guidance

To detect this vulnerability, check if your vgmstream version is up to r2117. Inspect files using TXTH/TXTP formats for malformed input that could trigger buffer overflows. Use static analysis tools to scan src/meta/txth.c and src/meta/txtp_parser.c for unbounded sscanf patterns.

Impact Analysis

The vulnerability can be exploited remotely by providing crafted input files, leading to application crashes or arbitrary code execution. Applications embedding vgmstream may be affected, potentially compromising system integrity or confidentiality if exploited.

Compliance Impact

This vulnerability could potentially impact compliance with GDPR and HIPAA by enabling remote code execution or data corruption through crafted audio files. If exploited, it may lead to unauthorized access to personal or health data processed by applications using vulnerable vgmstream versions, violating confidentiality and integrity requirements.

Mitigation Strategies

Immediately update vgmstream to the patched commit 4669d37a6af94866f6f0628678f9f90d46954e8b. Remove or restrict access to files using TXTH/TXTP formats until patched. Monitor network traffic for unusual activity targeting audio file parsers.

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