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Vulnerability DatabaseCVE-2026-25833

CVE-2026-25833: 
Mbed TLS vulnerability analysis and mitigation

Mbed TLS 3.5.0 to 3.6.5 fixed in 3.6.6 and 4.1.0 has a buffer overflow in the x509_inet_pton_ipv6() function

Source: NVD

Related Mbed TLS vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-34877CRITICAL9.8
  • Mbed TLSMbed TLS
  • mbedtls
NoYesApr 02, 2026
CVE-2026-34873CRITICAL9.1
  • Mbed TLSMbed TLS
  • mbedtls-devel
NoYesApr 01, 2026
CVE-2026-34872CRITICAL9.1
  • Mbed TLSMbed TLS
  • cpe:2.3:a:arm:mbed_tls
NoYesApr 01, 2026
CVE-2026-34876HIGH7.5
  • Mbed TLSMbed TLS
  • mbedtls
NoYesApr 02, 2026
CVE-2025-66442MEDIUM5.1
  • Mbed TLSMbed TLS
  • mbedtls
NoNoApr 01, 2026

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