{
  "cveId": "CVE-2026-48103",
  "url": "https://patchblox.com/security/cve/CVE-2026-48103",
  "summary": "CVE-2026-48103 is fixed in 2 products on 1 platform, first by SUSE-SU-2026:22347-1, released June 23, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "7zip: 7-Zip is a file archiver with a high compression ratio",
  "description": "7-Zip is a file archiver with a high compression ratio. Versions 9.34 through 26.00 contain an off-by-one heap out-of-bounds read in the WIM (Windows Imaging) archive handler\u0027s security descriptor lookup. In CHandler::GetSecurity (CPP/7zip/Archive/Wim/WimHandler.cpp), the per-image SecurOffsets table holds numEntries \u002B 1 cumulative offsets, but the check securityId \u003E= SecurOffsets.Size() admits securityId == numEntries, and the function then reads SecurOffsets[securityId \u002B 1], fetching one UInt32 past the end of the heap-allocated CRecordVector (which performs no bounds checking on operator[]). The securityId is attacker-controlled at offset \u002B0xC of any directory entry in WIM metadata, and the handler is registered for .wim, .swm, .esd, and .ppkg and enabled by default in stock 7z.dll; the OOB triggers zero-click in the GUI because 7zFM.exe\u0027s ListView calls GetRawProp(kpidNtSecure) for every item during listing (ASan-confirmed), and is also reachable via CLI listing with 7zz l -slt. Impact is limited to denial of service under hardened allocators and minor information disclosure, since the OOB value is only consumed arithmetically as a length and is not surfaced to the attacker; there is no write primitive.",
  "published": "2026-06-05T17:16:48Z",
  "severity": "high",
  "cvss": 7.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
  "epss": 0.02161,
  "epssPercentile": 0.82318,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "7zip",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "22.01\u002Breally26.01\u002Bdfsg-0\u002Bdeb12u1",
      "fix": "DEBIAN-CVE-2026-48103",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-48103",
      "released": "2026-06-24T14:07:24Z"
    },
    {
      "platform": "linux",
      "product": "7zip",
      "release": "Debian 14",
      "fixedVersion": "26.01\u002Bdfsg-1",
      "fix": "DEBIAN-CVE-2026-48103",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-48103",
      "released": "2026-06-24T14:07:24Z"
    },
    {
      "platform": "linux",
      "product": "7zip",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "26.01-160000.1.1",
      "fix": "OPENSUSE-SU-2026:21038-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21038-1",
      "released": "2026-06-23T12:46:58Z"
    },
    {
      "platform": "linux",
      "product": "7zip",
      "release": "sles 15.6",
      "fixedVersion": "26.01-150400.9.6.1",
      "fix": "SUSE-SU-2026:2696-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2696-1",
      "released": "2026-06-30T09:10:04Z"
    },
    {
      "platform": "linux",
      "product": "7zip",
      "release": "sles 15.7",
      "fixedVersion": "26.01-150400.9.6.1",
      "fix": "SUSE-SU-2026:2696-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2696-1",
      "released": "2026-06-30T09:10:04Z"
    },
    {
      "platform": "linux",
      "product": "7zip",
      "release": "sles 16.0",
      "fixedVersion": "26.01-160000.1.1",
      "fix": "SUSE-SU-2026:22347-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-22347-1",
      "released": "2026-06-23T12:43:00Z"
    },
    {
      "platform": "linux",
      "product": "p7zip",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "16.02\u002Breally26.01\u002Bdfsg-0\u002Bdeb12u1",
      "fix": "DEBIAN-CVE-2026-48103",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-48103",
      "released": "2026-06-24T14:07:24Z"
    },
    {
      "platform": "linux",
      "product": "p7zip",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "16.02\u002Btransitional.1",
      "fix": "DEBIAN-CVE-2026-48103",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-48103",
      "released": "2026-06-24T14:07:24Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}