CVE-2026-9529

GNU LibreDWG Dwggrep Utility dwggrep.c match_BLOCK_HEADER null pointer dereference

Assigner: VulDB
Reserved: 25.05.2026 Published: 26.05.2026 Updated: 26.05.2026

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.

Metrics

CVSS Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
CVSS Score: 4.8

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Local	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	Low	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CVSS Score: 3.3

Attack Vector	Local	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	Low	Integrity Impact	None
User Interaction	None	Availability Impact	Low

CVSS 3.1

CVSS Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CVSS Score: 3.3

Attack Vector	Local	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	Low	Integrity Impact	None
User Interaction	None	Availability Impact	Low

CVSS 3.0

CVSS Vector: AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C
CVSS Score: 1.7

Access Vector	Local	Confidentiality Impact	None
Access Complexity	Low	Integrity Impact	None
Authentication	Single	Availability Impact	Partial

CVSS 2.0

Product Status

Vendor	GNU
Product	LibreDWG
Versions	Version 0.1 is affected Version 0.2 is affected Version 0.3 is affected Version 0.4 is affected Version 0.5 is affected Version 0.6 is affected Version 0.7 is affected Version 0.8 is affected Version 0.9 is affected Version 0.10 is affected Version 0.11 is affected Version 0.12 is affected Version 0.13 is affected Version 0.14 is affected

Vendor

GNU

Product

LibreDWG

Versions

Version 0.1 is affected
Version 0.2 is affected
Version 0.3 is affected
Version 0.4 is affected
Version 0.5 is affected
Version 0.6 is affected
Version 0.7 is affected
Version 0.8 is affected
Version 0.9 is affected
Version 0.10 is affected
Version 0.11 is affected
Version 0.12 is affected
Version 0.13 is affected
Version 0.14 is affected

Credits

pwn3rd (VulDB User) reporter

References

Problem Types