CVE-2026-62254

LibreDWG is a free C library to read and write DWG files. Prior to 0.14, a specially crafted R13-R2000 DWG can trigger algorithmic resource exhaustion in `decode_R13_R2000` in `src/decode.c`. The class-decoding loop performs `realloc` on every iteration without a sanity check on `num_classes`. Manipulating that field forces an extremely slow allocation loop and denial of service when the file is parsed. Running the parser in a sandbox with memory limits is a workaround rather than a remediation. This issue is fixed in version 0.14.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/LibreDWG/libredwg/commit/9de893a2e395ff5ac104a46cca54c5e2cf8f02cf
https://github.com/LibreDWG/libredwg/issues/1261
https://github.com/LibreDWG/libredwg/releases/tag/0.14
https://github.com/LibreDWG/libredwg/security/advisories/GHSA-gp83-hcvh-g255

Configurations

No configuration.

History

30 Oct 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-30 21:17

Updated : 2026-10-30 23:17

NVD link : CVE-2026-62254

Mitre link : CVE-2026-62254

CVE.ORG link : CVE-2026-62254

JSON object : View

Products Affected

No product.

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-789

Memory Allocation with Excessive Size Value

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