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

🗓️ 20 Apr 2026 20:55:41Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 3 Views

CVE-2026-5450: Scanf %mc with width over 1024 in gnu c library versions 2.7 to 2.43 may cause a one-byte heap overflow.

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16 Jul 2026 03:30Current
6.3Medium risk
Vulners AI Score6.3
CVSS 3.19.8
EPSS0.00502
3