Denial of Service Vulnerability in RAR Decoding Library by Nwaples
CVE-2025-11579

5.3MEDIUM

Key Information:

Vendor

Nwaples

Status
Rardecode
Vendor
CVE Published:
10 October 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-11579?

The RAR decoding library by Nwaples has a vulnerability that allows an attacker to exploit it by submitting a specially crafted RAR file. The flaw arises from the lack of restrictions on the dictionary size during the decoding process, which can lead to an Out Of Memory Crash. This results in a Denial of Service condition, making the affected applications unable to process further requests effectively. Users of rardecode are advised to upgrade to a fixed version to mitigate this risk.

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Affected Version(s)

rardecode 2.0.1 <= 2.1.1

rardecode 2.2.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

PoC_CVE-2025-11579
Created by shinigami-777

References

https://github.com/nwaples/rardecode/commit/52fb4e825c936...

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Juho Forsén
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