Denial of Service Vulnerability in WinRAR 5.61 from RARLAB
CVE-2019-25677

6.9MEDIUM

Key Information:

Vendor

Win-rar

Status
Winrar
Vendor
CVE Published:
5 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2019-25677?

WinRAR 5.61 is susceptible to a denial of service vulnerability that can be exploited by local attackers. By inserting a malformed 'winrar.lng' language file into the application’s installation directory, an attacker can induce a crash. The vulnerability manifests when the application attempts to read invalid data while processing an archive. This leads to an access violation at memory address 004F1DB8, crashing the WinRAR application when the test button is activated.

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Affected Version(s)

WinRAR 5.61 32 Bit

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.

CVE-2019-25677 - Proof of Concept

References

https://www.exploit-db.com/exploits/46432
exploit
https://win-rar.com/predownload.html?spV=true&subD=true&f...
product
https://www.vulncheck.com/advisories/winrar-denial-of-ser...
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Kağan Çapar
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