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

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Apr 1, 2026 · NIST NVD

   Detected

   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

2. Jun 17, 2026 · NIST NVD

   Updated

   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

Affected

• cpe trustedfirmware/mbed tlsversion unspecified
• cpe trustedfirmware/mbed tls4.0.0

Sources

• CVE.orgVulnerability recordCVE-2026-25833

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-25833

  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

  nvd.nist.gov

References

• Vendor Advisory · mbed-tls.readthedocs.io
• Vendor Advisory · mbed-tls.readthedocs.io