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GNU LibreDWG EUVDEUVD-2026-42581

| CVE-2026-15184 LOW
NULL Pointer Dereference (CWE-476)
2026-07-09 VulDB GHSA-fgx7-4whx-rx6p
Denial Of Service Null Pointer Dereference Libredwg
1.9
CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY
1.9 MEDIUM
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
vuln.today AI
3.3 LOW

Local low-privilege access required to supply crafted DWG input; scope unchanged, no confidentiality or integrity impact, availability limited to vulnerable process crash.

3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

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
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

3
Severity Changed
Jul 09, 2026 - 13:22 NVD
MEDIUM LOW
CVSS changed
Jul 09, 2026 - 13:22 NVD
4.8 (MEDIUM) 1.9 (LOW)
Analysis Generated
Jul 09, 2026 - 12:51 vuln.today

DescriptionCVE.org

A vulnerability was found in GNU LibreDWG up to 0.13.4. The impacted element is the function dwg_next_entity of the file src/dwg.c of the component DWG File Handler. Performing a manipulation of the argument next_obj results in null pointer dereference. The attack must be initiated from a local position. The exploit has been made public and could be used. Upgrading to version 0.14 is sufficient to resolve this issue. The patch is named dde45dac3c4d902e4d8fed150a8017b9732019c9. Upgrading the affected component is recommended. Different than CVE-2026-9503.

AnalysisAI

Null pointer dereference in GNU LibreDWG up to 0.13.4 allows a local low-privileged attacker to crash any application that processes a maliciously crafted DWG file via the dwg_next_entity function in src/dwg.c, resulting in denial of service. A proof-of-concept exploit file is publicly available (CVSS 4.0 E:P), though no active exploitation is confirmed in CISA KEV. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain local low-privilege account access
Delivery
Craft or obtain malicious DWG file (POC public)
Exploit
Submit file to LibreDWG-based application
Execution
Trigger null pointer dereference in dwg_next_entity
Impact
Application process crashes (denial of service)
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Vulnerability AssessmentAI

Exploitation Exploitation requires the attacker to hold a local account on the target system with at least low-privilege access (confirmed by CVSS PR:L and AV:L). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 base score of 4.8 with vector AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N accurately reflects a constrained, low-severity flaw. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario A local user with standard (low-privilege) account access places or supplies a specially crafted DWG file - such as the publicly available proof-of-concept at https://github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_0b57303_dwggrep_segv_null_read_dwg_next_entity_dwg.c_1231.dwg - to an application embedding LibreDWG 0.13.4 or earlier, such as a batch DWG converter or `dwggrep`. The malformed file causes `dwg_next_entity` to dereference a null `next_obj` pointer, immediately crashing the process. …
Remediation Upgrade GNU LibreDWG to version 0.14, which resolves the null pointer dereference. … Detailed patch versions, workarounds, and compensating controls in full report.
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EUVD-2026-42581 vulnerability details – vuln.today
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