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.
CVE-2017-14032
Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2022-05-17. NVD baseline CVSS 8.1; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 8.1
- EG Score
- 8.1(medium)
- EPSS
- 71.0%
- KEV
- Not listed
Published
August 30, 2017
Last Modified
June 5, 2026
Advisory Details (4)
Auto-updated Jun 5, 2026commit d15795acd507 (ARMmbed/mbedtls)
Fix landed in ARMmbed/mbedtls commit d15795acd507 — awaiting tagged release
https://github.com/ARMmbed/mbedtls/commit/d15795acd5074e0b44e71f7ede8bdfe1b48591fccommit 31458a18788b (ARMmbed/mbedtls)
Fix landed in ARMmbed/mbedtls commit 31458a18788b — awaiting tagged release
https://github.com/ARMmbed/mbedtls/commit/31458a18788b0cf0b722acda9bb2f2fe13a3fb32#873557 - mbedtls: CVE-2017-14032: authentication bypass - Debian Bug report logs
https://bugs.debian.org/873557Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 35× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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Frequently asked(5)
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Dependency Blast Radius
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