Stack Out-of-Bounds Read in vgmstream G.722.1/Siren14 Decoder
CVE-2026-110660

4.8MEDIUM

Key Information:

Vendor

Vgmstream

Status
Vgmstream
Vendor
CVE Published:
14 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-110660?

vgmstream version r2117 is susceptible to a stack out-of-bounds read vulnerability in its G.722.1/Siren14 decoder. This vulnerability arises from the bit reader's failure to verify the bounds of the data_u32 array while refilling during the decoding process. Attackers can leverage this flaw by supplying specially crafted .s14 or .sss files. These files can manipulate the decoding function decode_vector_quantized_mlt_indices() to exceed the stack buffer limits during format detection, potentially leading to crashes in the vgmstream application.

Affected Version(s)

vgmstream 0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-110660 - Proof of Concept

References

https://hackmd.io/@haind-pwn/vgmstream-g7221-bitreader-oo...
technical-descriptionexploit
https://github.com/vgmstream/vgmstream/blob/71e2361042531...
technical-description
https://github.com/vgmstream/vgmstream
product

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

HaiND from the Post and Telecommunication Institute of Technology
.