Out-of-Bounds Read Vulnerability in GNU LibreDWG by GNU
CVE-2026-9530

4.8MEDIUM

Key Information:

Vendor

Gnu
Status
Libredwg
Vendor
CVE Published:
26 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-9530?

A vulnerability in GNU LibreDWG, specifically in the read_2004_compressed_section function of the src/decode.c file, allows for out-of-bounds read operations. This vulnerability affects versions of the software up to 0.14 and requires local access to exploit. Once manipulated, it can potentially lead to unauthorized data access. Publicly available exploits have been developed, highlighting the importance of applying the provided patch (commit 8f03865f37f5d4ffd616fef802acc980be54d300) to mitigate this issue.

Affected Version(s)

LibreDWG 0.1

LibreDWG 0.2

LibreDWG 0.3

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-2026-9530 - Proof of Concept

References

https://vuldb.com/vuln/365549
vdb-entrytechnical-description
https://vuldb.com/vuln/365549/cti
signaturepermissions-required
https://vuldb.com/submit/814275
third-party-advisory

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:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

pwn3rd (VulDB User)
.