Vulnerability Details CVE-2026-34877
An issue was discovered in Mbed TLS versions from 2.19.0 up to 3.6.5, Mbed TLS 4.0.0. Insufficient protection of serialized SSL context or session structures allows an attacker who can modify the serialized structures to induce memory corruption, leading to arbitrary code execution. This is caused by Incorrect Use of Privileged APIs.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 22.5%
CVSS Severity
CVSS v3 Score 9.8
References
Products affected by CVE-2026-34877
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cpe:2.3:a:arm:mbed_tls:2.19.0
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cpe:2.3:a:arm:mbed_tls:2.19.1
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cpe:2.3:a:arm:mbed_tls:2.20.0
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cpe:2.3:a:arm:mbed_tls:2.21.0
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cpe:2.3:a:arm:mbed_tls:2.22.0
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cpe:2.3:a:arm:mbed_tls:2.23.0
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cpe:2.3:a:arm:mbed_tls:2.24.0
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cpe:2.3:a:arm:mbed_tls:2.25.0
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cpe:2.3:a:arm:mbed_tls:2.26.0
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cpe:2.3:a:arm:mbed_tls:2.27.0
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cpe:2.3:a:arm:mbed_tls:2.28.0
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cpe:2.3:a:arm:mbed_tls:2.28.1
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cpe:2.3:a:arm:mbed_tls:2.28.10
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cpe:2.3:a:arm:mbed_tls:2.28.2
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cpe:2.3:a:arm:mbed_tls:2.28.3
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cpe:2.3:a:arm:mbed_tls:2.28.4
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cpe:2.3:a:arm:mbed_tls:2.28.5
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cpe:2.3:a:arm:mbed_tls:2.28.6
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cpe:2.3:a:arm:mbed_tls:2.28.7
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cpe:2.3:a:arm:mbed_tls:2.28.8
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cpe:2.3:a:arm:mbed_tls:2.28.9
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cpe:2.3:a:arm:mbed_tls:3.0.0
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cpe:2.3:a:arm:mbed_tls:3.1.0
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cpe:2.3:a:arm:mbed_tls:3.2.0
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cpe:2.3:a:arm:mbed_tls:3.2.1
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cpe:2.3:a:arm:mbed_tls:3.3.0
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cpe:2.3:a:arm:mbed_tls:3.4.0
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cpe:2.3:a:arm:mbed_tls:3.4.1
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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
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cpe:2.3:a:arm:mbed_tls:4.0.0