CVE-2025-11579: rardecode through 2.1.1 (inclusive), 2.0.1 through 2.1.1

Affected technology

rardecode · through 2.1.1 (inclusive)
nwaples

rardecode · 2.0.1 through 2.1.1
nwaples

Description’s affected range: versions <=2.1.1 fail to restrict the dictionary size when reading large RAR dictionary sizes, which

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

Attack conditions (NVD, CVSS 3.1): Network (remote) · No privileges required · User interaction required

What an attacker can do

The source says 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. Vendor/CNA’s CVSS 3.1 assessment (base score 5.3/10) rates confidentiality and integrity impact as none; availability impact as low. NVD’s CVSS 3.1 assessment (base score 6.5/10) rates confidentiality and integrity impact as none; availability impact as high.