Low severity · published May 26, 2026
CVE-2026-9529
GNU LibreDWG Dwggrep Utility dwggrep.c match_BLOCK_HEADER null pointer dereference
3.3
CVSS
0.1%
EPSS
No
On KEV
Description
A security flaw has been discovered in GNU LibreDWG up to 0.14. The affected element is the function match_BLOCK_HEADER of the file dwggrep.c of the component Dwggrep Utility. Performing a manipulation results in null pointer dereference. The attack requires a local approach. The exploit has been released to the public and may be used for attacks.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
LibreDWG · GNU
0.1; 0.2; 0.3; 0.4; 0.5; 0.6; +8 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-9529
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-9529
github.com
https://github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_6d6a339_heap_oob_write_read_2004_compressed_section.dwg
github.com
https://github.com/LibreDWG/libredwg/issues/1247
vuldb.com
https://vuldb.com/submit/814273
vuldb.com
https://vuldb.com/vuln/365548
vuldb.com
https://vuldb.com/vuln/365548/cti
www.gnu.org
https://www.gnu.org/
More from LibreDWG
9.8
CVE-2022-35164
LibreDWG v0.12.4.4608 & commit f2dea29 was discovered to contain a heap use-after-free via bit_copy_chain
9.8
CVE-2021-28237
LibreDWG v0.12.3 was discovered to contain a heap-buffer overflow via decode_preR13
9.8
CVE-2019-20914
An issue was discovered in GNU LibreDWG through 0.9.3
9.1
CVE-2019-9774
An issue was discovered in GNU LibreDWG 0.7 and 0.7.1645
9.1
CVE-2019-9775
An issue was discovered in GNU LibreDWG 0.7 and 0.7.1645