CVE-2023-38831
highKEV · exploitedEPSS 0.998 · 100 %ileexploit · weaponizedDEEURUUSadded 2023-08-24remediate by 2023-09-14
required action Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
EPSS · scored 2026-10-20
RARLAB WinRAR Code Execution Vulnerability
RARLAB WinRAR before 6.23 allows attackers to execute arbitrary code when a user attempts to view a benign file within a ZIP archive. The issue occurs because a ZIP archive may include a benign file (such as an ordinary .JPG file) and also a folder that has the same name as the benign file, and the contents of the folder (which may include executable content) are processed during an attempt to access only the benign file. This was exploited in the wild in April through October 2023.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
ATT&CK techniques
ATT&CK techniques this enables or maps to.
exploits (61)
Public proof-of-concept and weaponised exploit code.
- exploit/windows/fileformat/winrar_cve_2023_38831WinRAR CVE-2023-38831 Exploitweaponized · metasploit
- Fa1c0n35/CVE-2023-38831-winrar-exploitFa1c0n35/CVE-2023-38831-winrar-exploitPoC · poc_in_github
- FirFirdaus/CVE-2023-38831A POC demo on CVE-2023-38831PoC · poc_in_github
affected products (12)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2023-2093win.rar WinRAR: Mehrere Schwachstellen ermöglichen CodeausführungDeutsch2023-08-17csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in win.rar WinRAR ausnutzen, um beliebigen Programmcode auszuführen.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (18)
External citations — patches, advisories, analysis.
- https://blog.google/threat-analysis-group/government-backed-actors-exploiting-winrar-vulnerability/cnnvd
- https://cxsecurity.com/cveshow/CVE-2023-38831/cnnvd
- https://cxsecurity.com/issue/WLB-2023090063cnnvd
- https://news.ycombinator.com/item?id=37236100cnnvd
- https://packetstormsecurity.com/files/174573/WinRAR-Remote-Code-Execution.htmlcnnvd
- https://www.bleepingcomputer.com/news/security/winrar-zero-day-exploited-since-april-to-hack-trading-accounts/cnnvd
- https://www.group-ib.com/blog/cve-2023-38831-winrar-zero-day/cnnvd
- http://packetstormsecurity.com/files/174573/WinRAR-Remote-Code-Execution.htmlenisa_euvd
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