Unrated

DEBIAN-CVE-2026-40553

Type: advisorySource: OSV1 source record

Buffer overflow vulnerability has been found in "extension/readdir.c" program file of gawk (ftype() routine). This issue could be used to crash the program and potentially to achieve code execution, although the latter has not been confirmed to be feasible. It affects gawk in versions 5.4.0 and below.

Announced 13 Jul 2026Group revision 1

Original source ↗

DEBIAN-CVE-2026-40553

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-40553

gawk

Source reference: /affected/0/package/name

Affected versions: 1:5.2.1-2
Source reference: /affected/0/versions
1:5.3.2-1
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

gawk

Source reference: /affected/1/package/name

Affected versions: 1:5.2.1-2
Source reference: /affected/1/versions
1:5.3.2-1
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

gawk

Source reference: /affected/2/package/name

Affected versions: 1:5.2.1-2
Source reference: /affected/2/versions
1:5.3.2-1
Source reference: /affected/2/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "gawk",
      "purl": "pkg:deb/debian/gawk?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "1:5.2.1-2",
      "1:5.3.2-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40553.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "gawk",
      "purl": "pkg:deb/debian/gawk?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1:5.2.1-2",
      "1:5.3.2-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40553.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "gawk",
      "purl": "pkg:deb/debian/gawk?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "1:5.2.1-2",
      "1:5.3.2-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40553.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #56482 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 16:38:07 GMT
Publisher date: Mon, 13 Jul 2026 13:16:37 GMT

Read the original announcement

Revision history

25 Oct 2026DEBIAN-CVE-2026-40553 · Revision 1Source updated