GNU LibreDWG DWG File decode.c dwg_next_entity null pointer dereference

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Summary

CVECVE-2026-9503
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-25 21:16:36 UTC
Updated2026-05-26 19:54:40 UTC
DescriptionA security flaw has been discovered in GNU LibreDWG up to 0.14. This impacts the function dwg_next_entity of the file src/decode.c of the component DWG File Handler. The manipulation results in null pointer dereference. The attack must be initiated from a local position. The exploit has been released to the public and may be used for attacks. The patch is identified as 8f03865f37f5d4ffd616fef802acc980be54d300. Upgrading the affected component is advised.

Risk And Classification

Primary CVSS: v4.0 1.9 LOW from [email protected]

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS: 0.000130000 probability, percentile 0.021500000 (date 2026-05-27)

Problem Types: CWE-404 | CWE-476 | CWE-476 NULL Pointer Dereference | CWE-404 Denial of Service

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary1.9LOWCVSS: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/C...
4.0CNADECLARED4.8MEDIUMCVSS: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
3.1[email protected]Primary3.3LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
3.1CNADECLARED3.3LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
3.0CNADECLARED3.3LOWCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
2.0[email protected]Secondary1.7AV:L/AC:L/Au:S/C:N/I:N/A:P
2.0CNADECLARED1.7AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C

CVSS v4.0 Breakdown

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

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

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS v3.0 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA GNU LibreDWG affected 0.1 Not specified
CNA GNU LibreDWG affected 0.2 Not specified
CNA GNU LibreDWG affected 0.3 Not specified
CNA GNU LibreDWG affected 0.4 Not specified
CNA GNU LibreDWG affected 0.5 Not specified
CNA GNU LibreDWG affected 0.6 Not specified
CNA GNU LibreDWG affected 0.7 Not specified
CNA GNU LibreDWG affected 0.8 Not specified
CNA GNU LibreDWG affected 0.9 Not specified
CNA GNU LibreDWG affected 0.10 Not specified
CNA GNU LibreDWG affected 0.11 Not specified
CNA GNU LibreDWG affected 0.12 Not specified
CNA GNU LibreDWG affected 0.13 Not specified
CNA GNU LibreDWG affected 0.14 Not specified

References

ReferenceSourceLinkTags
github.com/LibreDWG/libredwg/issues/1245 [email protected] github.com
github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_6d6a339_heap_... [email protected] github.com
vuldb.com/vuln/365485 [email protected] vuldb.com
github.com/LibreDWG/libredwg/commit/8f03865f37f5d4ffd616fef802acc980be54... [email protected] github.com
vuldb.com/submit/814260 [email protected] vuldb.com
www.gnu.org [email protected] www.gnu.org
vuldb.com/vuln/365485/cti [email protected] vuldb.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: pwn3rd (VulDB User) (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-05-25T00:00:00.000ZAdvisory disclosed
CNA2026-05-25T02:00:00.000ZVulDB entry created
CNA2026-05-25T12:10:02.000ZVulDB entry last update
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