Heap-Based Buffer Overflow in GNU libredwg's Dwgbmp Utility
CVE-2026-9605

6.9MEDIUM

Key Information:

Vendor

Gnu
Status
Libredwg
Vendor
CVE Published:
26 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-9605?

A security flaw exists in the GNU libredwg library, specifically within the Dwgbmp Utility's bit_read_RC function, found in bits.c. This vulnerability can lead to a heap-based buffer overflow, which may allow an attacker to execute a remote exploit. The problem arises in how data is handled, permitting attackers to manipulate memory and potentially execute arbitrary code. It is critical for users of affected versions to apply the provided patch (8f03865f37f5d4ffd616fef802acc980be54d300) to mitigate this risk.

Affected Version(s)

libredwg 0.13.4.8160

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-2026-9605 - Proof of Concept

References

https://vuldb.com/vuln/365678
vdb-entrytechnical-description
https://vuldb.com/vuln/365678/cti
signaturepermissions-required
https://vuldb.com/submit/818197
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
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

r1ck9 (VulDB User)
.