Out-of-Bounds Write Vulnerability in Nothings stb Product
CVE-2026-5317

5.3MEDIUM

Key Information:

Vendor

Nothings

Status
Stb
Vendor
CVE Published:
2 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5317?

A security flaw has been identified in the Nothings stb product, affecting versions up to 1.22. This vulnerability pertains to an out-of-bounds write in the start_decoder function found in stb_vorbis.c. An attacker can perform this exploit remotely, posing significant risk to affected systems. Despite early notification to the vendor, no response was received regarding this issue, which has since been publicly disclosed and could be leveraged for attacks.

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Affected Version(s)

stb 1.0

stb 1.1

stb 1.2

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-2026-5317 - Proof of Concept

References

https://vuldb.com/vuln/354649
vdb-entrytechnical-description
https://vuldb.com/vuln/354649/cti
signaturepermissions-required
https://vuldb.com/submit/780561
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
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

d0razi (VulDB User)
VulDB
JSON
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