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    CVE-2018-20250

    In WinRAR versions prior to and including 5.61, There is path traversal vulnerability when crafting the filename field of the ACE format (in UNACEV2.dll). When the filename field is manipulated with specific patterns, the destination (extraction) folder is ignored, thus treating the filename as an absolute path.

    Published:Feb 5, 2019
    Last Modified:Oct 31, 2025
    EPS:Feb 5, 2019
    EPSS Score:0.93376
    CVSS Score:7.8

    CISA Notification

    Description

    In WinRAR versions prior to and including 5.61, There is path traversal vulnerability when crafting the filename field of the ACE format (in UNACEV2.dll). When the filename field is manipulated with specific patterns, the destination (extraction) folder is ignored, thus treating the filename as an absolute path.

    Required Action:

    Apply updates per vendor instructions.

    Notes:

    No extra notes provided.

    Due Date
    Aug 15, 2022
    1488 days ago
    Alert Date
    Feb 15, 2022
    1669 days ago

    Affected Products

    Vendor
    Rarlab
    Product
    Winrar

    Exploits

    http://packetstormsecurity.com/files/152618/RARLAB-WinRAR-ACE-Format-Input-Validation-Remote-Code-Execution.htmlhttps://github.com/blau72/CVE-2018-20250-WinRAR-ACEhttps://research.checkpoint.com/extracting-code-execution-from-winrar/https://www.exploit-db.com/exploits/46552/https://www.exploit-db.com/exploits/46756/http://packetstormsecurity.com/files/152618/RARLAB-WinRAR-ACE-Format-Input-Validation-Remote-Code-Execution.htmlhttps://github.com/blau72/CVE-2018-20250-WinRAR-ACEhttps://research.checkpoint.com/extracting-code-execution-from-winrar/https://www.exploit-db.com/exploits/46552/https://www.exploit-db.com/exploits/46756/https://www.exploit-db.com/exploits/46756https://github.com/AeolusTF/CVE-2018-20250https://github.com/arkangel-dev/CVE-2018-20250-WINRAR-ACE-GUIhttps://github.com/blunden/UNACEV2.DLL-CVE-2018-20250https://github.com/easis/CVE-2018-20250-WinRAR-ACEhttps://github.com/eastmountyxz/CVE-2018-20250-WinRARhttps://github.com/Ektoplasma/ezwinrarhttps://github.com/H4xl0r/WinRar_ACE_exploit_CVE-2018-20250https://github.com/joydragon/Detect-CVE-2018-20250https://github.com/LamSonBinh/CVE-2018-20250https://github.com/likekabin/CVE-2018-20250https://github.com/lxg5763/cve-2018-20250https://github.com/nmweizi/CVE-2018-20250-poc-winrarhttps://github.com/QAX-A-Team/CVE-2018-20250https://github.com/STP5940/CVE-2018-20250https://github.com/tannlh/CVE-2018-20250https://github.com/technicaldada/hack-winrarhttps://github.com/tzwlhack/CVE-2018-20250https://github.com/WyAtu/CVE-2018-20250https://github.com/zeronohacker/CVE-2018-20250https://www.exploit-db.com/exploits/46552

    Related CVEs

    CVE-2019-25677 (CVSS 6.9) — WinRAR 5.61 contains a denial of service vulnerability that allows local attackers to crash the application by…
    CVE-2025-52331 (CVSS 6.1) — Cross-site scripting (XSS) vulnerability in the generate report functionality in Rarlab WinRAR 7.11, allows at…
    CVE-2025-8088 (CVSS 8.4) — A path traversal vulnerability affecting the Windows version of WinRAR allows the attackers to execute arbitra…
    CVE-2014-125119 (CVSS 8.4) — A filename spoofing vulnerability exists in WinRAR when opening specially crafted ZIP archives. The issue aris…
    CVE-2025-6218 (CVSS 7.8) — RARLAB WinRAR Directory Traversal Remote Code Execution Vulnerability. This vulnerability allows remote attack…
    CVE-2025-31334 (CVSS 6.8) — Issue that bypasses the "Mark of the Web" security warning function for files when opening a symbolic link tha…
    CVE-2024-36052 (CVSS 7.5) — RARLAB WinRAR before 7.00, on Windows, allows attackers to spoof the screen output via ANSI escape sequences, …
    CVE-2023-40477 (CVSS 7.8) — RARLAB WinRAR Recovery Volume Improper Validation of Array Index Remote Code Execution Vulnerability. This vul…
    CVE-2024-33899 (CVSS 7.1) — RARLAB WinRAR before 7.00, on Linux and UNIX platforms, allows attackers to spoof the screen output, or cause …
    CVE-2024-30370 (CVSS 4.3) — RARLAB WinRAR Mark-Of-The-Web Bypass Vulnerability. This vulnerability allows remote attackers to bypass the M…

    References

    http://packetstormsecurity.com/files/152618/RARLAB-WinRAR-ACE-Format-Input-Validation-Remote-Code-Execution.html
    http://www.rapid7.com/db/modules/exploit/windows/fileformat/winrar_ace
    http://www.securityfocus.com/bid/106948
    https://github.com/blau72/CVE-2018-20250-WinRAR-ACE
    https://research.checkpoint.com/extracting-code-execution-from-winrar/
    https://www.exploit-db.com/exploits/46552/
    https://www.exploit-db.com/exploits/46756/
    https://www.win-rar.com/whatsnew.html
    http://packetstormsecurity.com/files/152618/RARLAB-WinRAR-ACE-Format-Input-Validation-Remote-Code-Execution.html
    http://www.rapid7.com/db/modules/exploit/windows/fileformat/winrar_ace
    http://www.securityfocus.com/bid/106948
    https://github.com/blau72/CVE-2018-20250-WinRAR-ACE
    https://research.checkpoint.com/extracting-code-execution-from-winrar/
    https://www.exploit-db.com/exploits/46552/
    https://www.exploit-db.com/exploits/46756/
    https://www.win-rar.com/whatsnew.html
    https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-20250

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High