Heap Out-of-Bounds Read Vulnerability in Libyal Libesedb Product
CVE-2026-111147

6.9MEDIUM

Key Information:

Vendor

Libyal

Status
Libesedb
Vendor
CVE Published:
15 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-111147?

Libyal Libesedb through version 20260704 is affected by a heap out-of-bounds read vulnerability within the function libesedb_record_get_multi_value(). This issue allows attackers to read past allocated buffers by exploiting unbounded multi-value offset tables. By supplying a specially crafted ESE/EDB database, an attacker may cause the application to crash or disclose sensitive information located in adjacent heap memory, potentially revealing up to 32 KiB of data.

Affected Version(s)

libesedb 0 <= 20260704

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-2026-111147 - Proof of Concept

References

https://hackmd.io/@haind-pwn/libesedb-multi-value-offset-...
technical-descriptionexploit
https://github.com/libyal/libesedb/blob/cf49b6d420d4a44dc...
technical-description
https://github.com/libyal/libesedb
product

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
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
.