Vulnerability Details CVE-2026-34873
An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 10.6%
CVSS Severity
CVSS v3 Score 9.1
Products affected by CVE-2026-34873
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cpe:2.3:a:arm:mbed_tls:3.5.0
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cpe:2.3:a:arm:mbed_tls:3.5.1
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cpe:2.3:a:arm:mbed_tls:3.5.2
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cpe:2.3:a:arm:mbed_tls:3.6.0
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cpe:2.3:a:arm:mbed_tls:3.6.1
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cpe:2.3:a:arm:mbed_tls:3.6.2
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cpe:2.3:a:arm:mbed_tls:3.6.3
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cpe:2.3:a:arm:mbed_tls:3.6.4
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cpe:2.3:a:arm:mbed_tls:3.6.5