GNU LibreDWG up to 0.14 Dwgread Utility src/decode.c read_2004_compressed_section heap-based overflow

Summaryinfo

A vulnerability described as critical has been identified in GNU LibreDWG up to 0.14. The impacted element is the function read_2004_compressed_section of the file src/decode.c of the component Dwgread Utility. Executing a manipulation can lead to heap-based overflow. This vulnerability is tracked as CVE-2026-9500. The attack is restricted to local execution. Moreover, an exploit is present. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability classified as critical was found in GNU LibreDWG up to 0.14. This vulnerability affects the function read_2004_compressed_section of the file src/decode.c of the component Dwgread Utility. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is available at github.com. This vulnerability was named CVE-2026-9500. The exploitation appears to be easy. Local access is required to approach this attack. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-31732). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Image Processing Software

Vendor

• GNU

Name

• LibreDWG

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14

License

• open-source

Website

• Vendor: https://www.gnu.org/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Entryinfo

Submitinfo

Accepted

• Submit #814248: LibreDWG Project LibreDWG <= 0.14, main branch up to commit 6d6a339 (released 2026-04-10) Heap-based Buffer Overflow (CWE-122) (by pwn3rd)

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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