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CVE-2025-11579

MediumPublished

DoS via Out Of Memory Crash

Published: Oct 10, 2025
Updated: Dec 2, 2025
Assigning CNA: Mattermost
Evidence observed: Aug 25, 2026

Primary CVSS

6.5/ 10Medium

nvd · CVSS 3.1

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

EPSS probability estimate

0.4%

Low · next 30 days

Percentile: 31.2%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

github.com/nwaples/rardecode versions <=2.1.1 fail to restrict the dictionary size when reading large RAR dictionary sizes, which allows an attacker to provide a specially crafted RAR file and cause Denial of Service via an Out Of Memory Crash.

Sources

PoC_CVE-2025-11579PoC
Proof-of-concept exploit for CVE-2025-11579, a denial-of-service vulnerability in rardecode that triggers an out-of-memory crash via a crafted RAR file with an oversized dictionary size.

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