UBUNTU-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 cause...

MBed TLS security vulnerabilities

Mbed TLS is an open-source, portable, easy-to-use, readable, and flexible SSL library developed by Mbed TLS. Mbed TLS versions 3.6.5 and earlier, as well as version 4.0.0, have security vulnerabilities. These vulnerabilities stem from insufficient protection for serialized SSL contexts or session...

EUVD-2026-18064

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...

CVE-2026-25835

Mbed TLS before 3.6.6 and TF-PSA-Crypto before 1.1.0 misuse seeds in a Pseudo-Random Number Generator PRNG...

CVE-2026-25834

Mbed TLS v3.3.0 up to 3.6.5 and 4.0.0 allows Algorithm Downgrade...

UBUNTU-CVE-2026-25834

Mbed TLS v3.3.0 up to 3.6.5 and 4.0.0 allows Algorithm Downgrade...

UBUNTU-CVE-2026-34875

An issue was discovered in Mbed TLS through 3.6.5 and TF-PSA-Crypto 1.0.0. A buffer overflow can occur in public key export for FFDH keys...

CVE-2026-25835

Mbed TLS before 3.6.6 and TF-PSA-Crypto before 1.1.0 misuse seeds in a Pseudo-Random Number Generator PRNG...

CVE-2026-34871

A predictable seed in a Pseudo-Random Number Generator (PRNG) affects Mbed TLS (before 3.6.6 and 4.x before 4.1.0) and TF-PSA-Crypto (before 1.1.0). Specifically, on systems where getrandom() is unavailable, /dev/urandom is used as a fallback instead of /dev/random . The impact of this vulnerabil...

CVE-2026-25834

Mbed TLS v3.3.0 up to 3.6.5 and 4.0.0 allows Algorithm Downgrade...

JLSEC-2025-230 Mbed TLS before 3.6.4 has a NULL pointer dereference because `mbedtls_asn1_store_named_data` can...

Mbed TLS before 3.6.4 has a NULL pointer dereference because mbedtlsasn1storenameddata can trigger conflicting data with val.p of NULL but val.len greater than zero...

CVE-2025-59438

Mbed TLS through 3.6.4 has an Observable Timing Discrepancy...

CVE-2025-54764

Mbed TLS before 3.6.5 allows a local timing attack against certain RSA operations, and direct calls to mbedtlsmpimodinv or mbedtlsmpigcd. Mitigation Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ea...

Linux Distros Unpatched Vulnerability : CVE-2020-36478

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An issue was discovered in Mbed TLS before 2.25.0 and before 2.16.9 LTS and before 2.7.18 LTS. A NULL algorithm parameters entry looks identical to an array of...

Linux Distros Unpatched Vulnerability : CVE-2018-0498

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ARM mbed TLS before 2.12.0, before 2.7.5, and before 2.1.14 allows local users to achieve partial plaintext recovery for a CBC based ciphersuite via a cache-bas...

Linux Distros Unpatched Vulnerability : CVE-2024-30166

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In Mbed TLS 3.3.0 through 3.5.2 before 3.6.0, a malicious client can cause information disclosure or a denial of service because of a stack buffer over-read of...

Linux Distros Unpatched Vulnerability : CVE-2018-9988

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ARM mbed TLS before 2.1.11, before 2.7.2, and before 2.8.0 has a buffer over-read in sslparseserverkeyexchange that could cause a crash on invalid input...

Linux Distros Unpatched Vulnerability : CVE-2025-52497

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Mbed TLS before 3.6.4 has a PEM parsing one-byte heap-based buffer underflow, in mbedtlspemreadbuffer and two mbedtlspkparse functions, via untrusted PEM input...

Mbed TLS 2.x before 2.28.5 and 3.x before 3.5.0 has a Buffer Overflow.

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Astra Linux – Vulnerability in mbedtls

A vulnerability was discovered in Mbed TLS 2.x before version 2.28.7, and also in Mbed TLS 3.x before version 3.5.2. There was a timing-related side channel involved in RSA private operations. This side channel could allow a local attacker to recover the plaintext. To exploit this vulnerability,...