GNU LibreDWG Dwgread Utility decode.c decompress_R2004_section heap-based overflow

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Summary

CVECVE-2026-9502
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-25 21:16:35 UTC
Updated2026-05-26 19:54:40 UTC
DescriptionA vulnerability was identified in GNU LibreDWG up to 0.14. This affects the function decompress_R2004_section of the file src/decode.c of the component Dwgread Utility. The manipulation leads to heap-based buffer overflow. The attack must be carried out locally. The exploit is publicly available and might be used. The identifier of the patch is e501cb9926c1e9a07a0d1cc997f3e69e9be801c9. To fix this issue, it is recommended to deploy a patch.

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:L/VI:L/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 0.021410000 (date 2026-05-27)

Problem Types: CWE-119 | CWE-122 | CWE-122 Heap-based Buffer Overflow | CWE-119 Memory Corruption

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary1.9LOWCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/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:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
3.1[email protected]Primary5.3MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
3.1CNADECLARED5.3MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
3.0CNADECLARED5.3MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
2.0[email protected]Secondary4.3AV:L/AC:L/Au:S/C:P/I:P/A:P
2.0CNADECLARED4.3AV:L/AC:L/Au:S/C:P/I:P/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
Low
Integrity
Low
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:L/VI:L/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
Low
Integrity
Low
Availability
Low

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

CVSS v3.0 Breakdown

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

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/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
vuldb.com/submit/814259 [email protected] vuldb.com
github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_6d6a339_heap_... [email protected] github.com
github.com/LibreDWG/libredwg/issues/1243 [email protected] github.com
vuldb.com/vuln/365484 [email protected] vuldb.com
github.com/LibreDWG/libredwg/commit/e501cb9926c1e9a07a0d1cc997f3e69e9be8... [email protected] github.com
vuldb.com/vuln/365484/cti [email protected] vuldb.com
www.gnu.org [email protected] www.gnu.org
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
CNA2026-05-25T12:09:58.000ZVulDB entry last update
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