CVE-2026-9605: GNU libredwg Dwgbmp Utility bits.c bit_read_RC heap-based overflow

Severity: high (CVSS 7.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-27 · updated 2026-07-24
Weakness: CWE-119

Description

A flaw has been found in GNU libredwg up to 0.13.4.8160. This issue affects the function bit_read_RC of the file bits.c of the component Dwgbmp Utility. This manipulation causes heap-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been published and may be used. Patch name: 8f03865f37f5d4ffd616fef802acc980be54d300. Applying a patch is the recommended action to fix this issue.

Affected products

GNU LibreDWG: 0.13.4.8160

References

https://github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_6d6a339_heap_oob_write_read_2004_compressed_section.dwg
https://github.com/LibreDWG/libredwg/commit/8f03865f37f5d4ffd616fef802acc980be54d300
https://github.com/LibreDWG/libredwg/issues/1248
https://vuldb.com/submit/818197
https://vuldb.com/vuln/365678
https://vuldb.com/vuln/365678/cti
https://www.gnu.org/
https://github.com/LibreDWG/libredwg/issues/1248
https://vuldb.com/submit/818197

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