CVE-2026-92880Network attack vectorHinoki check available

Memory corruption via signed coefficient-count bypass

Published Sep 17, 2026 · Updated Sep 22, 2026

Out-of-bounds write in vgmstream r2117 allows remote attackers to corrupt decoder memory through a crafted EA SCHl audio stream. The EA SCHl parser stores attacker-controlled 32-bit entry counts in signed integers; negative values bypass the entries > 8 clamp, and vadpcm_read_coefs_be then writes entries × order × 8 coefficients into a fixed per-channel heap array. Opening or otherwise decoding the crafted file requires user interaction and can crash the host process or corrupt adjacent decoder state.

CVSS severity5.3
Medium
EPSS probability0.43%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Get started

Summary

What happened

Out-of-bounds write in vgmstream r2117 allows remote attackers to corrupt decoder memory through a crafted EA SCHl audio stream. The EA SCHl parser stores attacker-controlled 32-bit entry counts in signed integers; negative values bypass the entries > 8 clamp, and vadpcm_read_coefs_be then writes entries × order × 8 coefficients into a fixed per-channel heap array. Opening or otherwise decoding the crafted file requires user interaction and can crash the host process or corrupt adjacent decoder state.

The record

CVE
CVE-2026-92880
Published
Sep 17, 2026
Updated
Sep 22, 2026
Vendor
vgmstream
Product
vgmstream
Classifications
CWE-119, CWE-787, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=r2117

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

vgmstream · vgmstreamversion=r2117

Published CVSS scores

5.3VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Memory Corruption
CWE-787Out-of-bounds Write
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Get started to see how Hinoki identifies affected software and validates exploitability in your environment.

Get started