# CVE-2026-92881: vgmstream divide-by-zero in AWB parser

Source: https://junglewise.ai/threats/cve-2026-92881-vgmstream-divide-by-zero-in-awb-parser  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-17. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-92881 · Severity: medium · CVSS 4.3 · Published 2026-09-17

vgmstream is a widely-used open-source library for playing streamed audio formats from video games. A divide-by-zero flaw in the AWB audio file parser can crash the application when processing a maliciously crafted audio file, causing denial of service to any software using the library to play game audio.

Technologies: [Vgmstream](https://junglewise.ai/threats/technologies/vgmstream). Vendors: [Vgmstream](https://junglewise.ai/threats/vendors/vgmstream).

## Quick answers

**Is CVE-2026-92881 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-92881 being exploited in the wild.

**How severe is CVE-2026-92881?** Medium severity, with a CVSS score of 4.3, published 17 September 2026.

**Which products and versions are affected?** Vgmstream <commit ae37662ad626254ddd96ad69ac263792d7a92024.

**Is there a fix for CVE-2026-92881?** A patch was published on 2026-08-23: Patch commit ae37662ad626254ddd96ad69ac263792d7a92024 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-92881 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-92881?** Check whether you run Vgmstream at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is a divide-by-zero error in the init_vgmstream_awb_memory function within the AWB parser component (src/meta/awb.c). The flaw is triggered when processing specially crafted AWB audio files with zero-valued parameters that bypass input validation. The attack is remotely exploitable—an attacker can craft a malicious AWB file and provide it to a user or service for parsing, causing immediate application crash. No authentication is required. The patch (commit ae37662ad626254ddd96ad69ac263792d7a92024) is available and addresses multiple undefined behavior, buffer, and integer overflow issues in the parser.

## Affected products

- vgmstream vgmstream <commit ae37662ad626254ddd96ad69ac263792d7a92024

## Timeline

- 2026-09-17: disclosed
- 2026-08-23: patched: Patch commit ae37662ad626254ddd96ad69ac263792d7a92024

## References

- [https://github.com/vgmstream/vgmstream/](https://github.com/vgmstream/vgmstream/)
- [https://github.com/vgmstream/vgmstream/commit/ae37662ad626254ddd96ad69ac263792d7a92024](https://github.com/vgmstream/vgmstream/commit/ae37662ad626254ddd96ad69ac263792d7a92024)

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