{
  "id": "CVE-2023-38831",
  "url": "https://spydr.io/cve/CVE-2023-38831",
  "published": "2023-08-23T17:15:43.863Z",
  "modified": "2026-08-05T05:16:38.580Z",
  "score": 7.8,
  "severity": "high",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
  "score_source": "NVD",
  "epss": 0.99815,
  "epss_percentile": 0.99959,
  "exploited": true,
  "kev": {
    "added": "2023-08-24",
    "due": "2023-09-14",
    "action": "Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.",
    "ransomware": "Known",
    "name": "RARLAB WinRAR Code Execution Vulnerability",
    "notes": "http://www.win-rar.com/singlenewsview.html?&L=0&tx_ttnews%5Btt_news%5D=232&cHash=c5bf79590657e32554c6683296a8e8aa; https://nvd.nist.gov/vuln/detail/CVE-2023-38831"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "rarlab"
  ],
  "products": [
    "rarlab winrar"
  ],
  "cwes": [
    "CWE-345",
    "CWE-351"
  ],
  "description": "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.",
  "status": "Analyzed",
  "score_type": "Primary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 7.8,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "http://packetstormsecurity.com/files/174573/WinRAR-Remote-Code-Execution.html",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "https://blog.google/threat-analysis-group/government-backed-actors-exploiting-winrar-vulnerability/",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://news.ycombinator.com/item?id=37236100",
      "tags": [
        "Issue Tracking"
      ]
    },
    {
      "url": "https://www.bleepingcomputer.com/news/security/winrar-zero-day-exploited-since-april-to-hack-trading-accounts/",
      "tags": [
        "Exploit",
        "Press/Media Coverage",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.group-ib.com/blog/cve-2023-38831-winrar-zero-day/",
      "tags": [
        "Exploit",
        "Press/Media Coverage",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-38831",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2023-38831",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}