Heap Out-of-Bounds Read Vulnerability in libsidplayfp Affects Application Stability
CVE-2026-111148

6.8MEDIUM

Key Information:

Vendor

Libsidplayfp

Status
Libsidplayfp
Vendor
CVE Published:
15 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-111148?

The libsidplayfp library is vulnerable to a heap out-of-bounds read, allowing attackers to manipulate PSID/RSID files by supplying unchecked data offsets. This vulnerability permits attackers to exceed the file size limitations, which enables the resolveAddrs() function to attempt reading up to 64 KiB past the heap buffer. Such exploitation could lead to application crashes, impairing software functionality and affecting user experience.

Affected Version(s)

libsidplayfp 0 <= 3.1.1

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-2026-111148 - Proof of Concept

References

https://hackmd.io/@haind-pwn/libsidplayfp-psid-dataoffset...
technical-descriptionexploit
https://github.com/libsidplayfp/libsidplayfp/blob/732fa8e...
technical-description
https://github.com/libsidplayfp/libsidplayfp/blob/732fa8e...
technical-description

CVSS V4

Score:
6.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
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
.