What’s Vulnerable › Vulnerabilities

CVE-2017-14032

• Severity: high (CVSS 8.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-08-30 · updated 2026-06-17
• Weakness: CWE-287

Description

ARM mbed TLS before 1.3.21 and 2.x before 2.1.9, if optional authentication is configured, allows remote attackers to bypass peer authentication via an X.509 certificate chain with many intermediates. NOTE: although mbed TLS was formerly known as PolarSSL, the releases shipped with the PolarSSL name are not affected.

Affected products

• mbedtls: 1.3.19, 1.3.21, 2.1.7, 2.1.9, 2.4.2, 2.6.2
• TrustedFirmware Mbed TLS: 1.3.10, 1.3.11, 1.3.12, 1.3.13, 1.3.14, 1.3.15 (+18)

References

• http://www.debian.org/security/2017/dsa-3967
• https://bugs.debian.org/873557
• https://github.com/ARMmbed/mbedtls/commit/31458a18788b0cf0b722acda9bb2f2fe13a3fb32
• https://github.com/ARMmbed/mbedtls/commit/d15795acd5074e0b44e71f7ede8bdfe1b48591fc
• https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2017-02
• http://www.debian.org/security/2017/dsa-3967
• https://bugs.debian.org/873557
• https://github.com/ARMmbed/mbedtls/commit/31458a18788b0cf0b722acda9bb2f2fe13a3fb32
• https://github.com/ARMmbed/mbedtls/commit/d15795acd5074e0b44e71f7ede8bdfe1b48591fc
• https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2017-02

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