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CVE-2026-5450 scanf %mc off-by-one heap buffer overflow

🗓️ 20 Apr 2026 20:55:41Reported by glibcType 
cvelist
 cvelist
🔗 www.cve.org👁 34 Views

CVE-2026-5450: Scanf %mc with width over 1024 in GNU C Library 2.7–2.43 causes a one-byte heap overflow.

Related
Affected
Refs
[
  {
    "vendor": "The GNU C Library",
    "product": "glibc",
    "versions": [
      {
        "status": "affected",
        "version": "2.7",
        "lessThan": "*",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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20 Apr 2026 20:55Current
EPSS0.00451
34