Vulnerability · Published Jul 13, 2026 · Assigned by VulDB
CVE-2026-15520GNU LibreDWG R2004 Section Decompression decode.c decompress_R2004_section heap-based overflow
Medium 5.3
In plain English
A medium-severity heap buffer overflow in LibreDWG from GNU. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities).
Official description
A vulnerability was determined in GNU LibreDWG 0.13.4-154-g0b573035. This impacts the function decompress_R2004_section of the file src/decode.c of the component R2004 Section Decompression. Executing a manipulation can lead to heap-based buffer overflow. The attack requires local access. The exploit has been publicly disclosed and may be utilized. Upgrading to version 0.14.8396 will fix this issue. This patch is called 3d0f9fc2eddbd6579c99af3111c37c98f03475d0. You should upgrade the affected component.
Affected products (as reported)
Weakness: CWE-122, CWE-119 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
References
- VDB-377849 | GNU LibreDWG R2004 Section Decompression decode.c decompress_R2004_section heap-based overflow vdb-entry, technical-description
- VDB-377849 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- CVE-2026-15520 | CVE Analysis and Report third-party-advisory
- Submit #851190 | LibreDWG 0.13.4-154-g0b573035 (main branch, commit 0b573035, 2026-04-29) 内存损坏 (Heap Buffer Overflow - Write) third-party-advisory
- https://github.com/LibreDWG/libredwg/issues/1251 issue-tracking
- https://github.com/advisories/GHSA-qg2f-8389-w95j broken-link, issue-tracking
- https://github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_0b57303_heap_overflow_decompress_R2004_section.dwg exploit
- https://github.com/LibreDWG/libredwg/commit/3d0f9fc2eddbd6579c99af3111c37c98f03475d0 patch
- https://github.com/LibreDWG/libredwg/releases/tag/0.14.8396 patch
- https://www.gnu.org/ broken-link, product