PT-2026-43136 · Gnu · Libredwg

Pwn3Rd · Published 2026-04-22 · Updated 2026-05-28 · CVE-2026-9504

Positive Technologies (AI Summary)

CVSS v3.1

3.3

Low

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions GNU LibreDWG versions prior to 0.15

Description A weakness in the Dwggrep Utility component allows an out-of-bounds read, which occurs when the system accesses memory outside the intended boundary of a buffer. This issue is located in the bit convert TU() function within the programs/dwggrep.c file. A local attacker can exploit this to cause a denial of service.

Recommendations Apply patch be996bf2178a40e98720f18c2414815d244413db. As a temporary workaround, restrict the use of the bit convert TU() function.

Exploit

Fix

Buffer Overflow

Out of bounds Read

Weakness Enumeration

CWE-119

CWE-125

Related Identifiers

BDU:2026-07298

CVE-2026-9504

OPENSUSE-SU-2026:10879-1

Affected Products

Libredwg

References · 16

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/9xxx/CVE-2026-9504.json · Exploit
• 🔥 https://github.com/LibreDWG/libredwg/issues/1246 · Exploit
• 🔥 https://github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_6d6a339_heap_overflow_bit_convert_TU.dwg · Exploit
• https://github.com/LibreDWG/libredwg/commit/be996bf2178a40e98720f18c2414815d244413db · Patch
• https://osv.dev/vulnerability/CVE-2026-9504 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-07298 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2026:10879-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-9504 · Security Note
• https://vuldb.com/vuln/365486 · Note
• https://gnu.org · Note
• https://vuldb.com/vuln/365486/cti · Note
• https://suse.com/security/cve/CVE-2026-9605 · Note
• https://vuldb.com/submit/814261 · Note
• https://suse.com/security/cve/CVE-2026-9504 · Note
• https://suse.com/security/cve/CVE-2026-9503 · Note