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| CVE | Vendors | Products | Updated | CVSS v3.1 |
|---|---|---|---|---|
| CVE-2022-35409 | 3 Arm, Debian, Trustedfirmware | 3 Mbed Tls, Debian Linux, Mbed Tls | 2026-06-05 | 9.1 Critical |
| An issue was discovered in Mbed TLS before 2.28.1 and 3.x before 3.2.0. In some configurations, an unauthenticated attacker can send an invalid ClientHello message to a DTLS server that causes a heap-based buffer over-read of up to 255 bytes. This can cause a server crash or possibly information disclosure based on error responses. Affected configurations have MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE enabled and MBEDTLS_SSL_IN_CONTENT_LEN less than a threshold that depends on the configuration: 258 bytes if using mbedtls_ssl_cookie_check, and possibly up to 571 bytes with a custom cookie check function. | ||||
| CVE-2025-49600 | 2 Mbed, Trustedfirmware | 2 Mbedtls, Mbed Tls | 2026-06-05 | 4.9 Medium |
| In MbedTLS 3.3.0 before 3.6.4, mbedtls_lms_verify may accept invalid signatures if hash computation fails and internal errors go unchecked, enabling LMS (Leighton-Micali Signature) forgery in a fault scenario. Specifically, unchecked return values in mbedtls_lms_verify allow an attacker (who can induce a hardware hash accelerator fault) to bypass LMS signature verification by reusing stale stack data, resulting in acceptance of an invalid signature. In mbedtls_lms_verify, the return values of the internal Merkle tree functions create_merkle_leaf_value and create_merkle_internal_value are not checked. These functions return an integer that indicates whether the call succeeded or not. If a failure occurs, the output buffer (Tc_candidate_root_node) may remain uninitialized, and the result of the signature verification is unpredictable. When the software implementation of SHA-256 is used, these functions will not fail. However, with hardware-accelerated hashing, an attacker could use fault injection against the accelerator to bypass verification. | ||||
| CVE-2026-34876 | 2 Mbed-tls, Trustedfirmware | 2 Mbedtls, Mbed Tls | 2026-06-05 | 7.5 High |
| An issue was discovered in Mbed TLS 3.x before 3.6.6. An out-of-bounds read vulnerability in mbedtls_ccm_finish() in library/ccm.c allows attackers to obtain adjacent CCM context data via invocation of the multipart CCM API with an oversized tag_len parameter. This is caused by missing validation of the tag_len parameter against the size of the internal 16-byte authentication buffer. The issue affects the public multipart CCM API in Mbed TLS 3.x, where mbedtls_ccm_finish() can be invoked directly by applications. In Mbed TLS 4.x versions prior to the fix, the same missing validation exists in the internal implementation; however, the function is not exposed as part of the public API. Exploitation requires application-level invocation of the multipart CCM API. | ||||
| CVE-2019-16910 | 4 Arm, Debian, Fedoraproject and 1 more | 5 Mbed Crypto, Mbed Tls, Debian Linux and 2 more | 2026-06-05 | 5.3 Medium |
| Arm Mbed TLS before 2.19.0 and Arm Mbed Crypto before 2.0.0, when deterministic ECDSA is enabled, use an RNG with insufficient entropy for blinding, which might allow an attacker to recover a private key via side-channel attacks if a victim signs the same message many times. (For Mbed TLS, the fix is also available in versions 2.7.12 and 2.16.3.) | ||||
| CVE-2024-30166 | 2 Arm, Trustedfirmware | 2 Mbed Tls, Mbed Tls | 2026-06-05 | 9.1 Critical |
| 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 less than 256 bytes) in a TLS 1.3 server via a TLS 3.1 ClientHello. | ||||
| CVE-2026-25833 | 2 Mbed-tls, Trustedfirmware | 2 Mbedtls, Mbed Tls | 2026-06-05 | 7.5 High |
| Mbed TLS 3.5.0 to 3.6.5 fixed in 3.6.6 and 4.1.0 has a buffer overflow in the x509_inet_pton_ipv6() function | ||||
| CVE-2022-46392 | 3 Arm, Fedoraproject, Trustedfirmware | 3 Mbed Tls, Fedora, Mbed Tls | 2026-06-05 | 5.3 Medium |
| An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. An adversary with access to precise enough information about memory accesses (typically, an untrusted operating system attacking a secure enclave) can recover an RSA private key after observing the victim performing a single private-key operation, if the window size (MBEDTLS_MPI_WINDOW_SIZE) used for the exponentiation is 3 or smaller. | ||||
| CVE-2026-25834 | 2 Mbed-tls, Trustedfirmware | 2 Mbedtls, Mbed Tls | 2026-06-05 | 6.5 Medium |
| Mbed TLS v3.3.0 up to 3.6.5 and 4.0.0 allows Algorithm Downgrade. | ||||
| CVE-2026-34873 | 2 Mbed-tls, Trustedfirmware | 2 Mbedtls, Mbed Tls | 2026-06-05 | 9.1 Critical |
| 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-2026-34874 | 2 Mbed-tls, Trustedfirmware | 2 Mbedtls, Mbed Tls | 2026-06-05 | 7.5 High |
| An issue was discovered in Mbed TLS through 3.6.5 and 4.x through 4.0.0. There is a NULL pointer dereference in distinguished name parsing that allows an attacker to write to address 0. | ||||
| CVE-2021-36647 | 2 Arm, Trustedfirmware | 2 Mbed Tls, Mbed Tls | 2026-06-05 | 4.7 Medium |
| Use of a Broken or Risky Cryptographic Algorithm in the function mbedtls_mpi_exp_mod() in lignum.c in Mbed TLS Mbed TLS all versions before 3.0.0, 2.27.0 or 2.16.11 allows attackers with access to precise enough timing and memory access information (typically an untrusted operating system attacking a secure enclave such as SGX or the TrustZone secure world) to recover the private keys used in RSA. | ||||
| CVE-2021-44732 | 3 Arm, Debian, Trustedfirmware | 3 Mbed Tls, Debian Linux, Mbed Tls | 2026-06-05 | 9.8 Critical |
| Mbed TLS before 3.0.1 has a double free in certain out-of-memory conditions, as demonstrated by an mbedtls_ssl_set_session() failure. | ||||
| CVE-2023-43615 | 4 Arm, Fedoraproject, Mbed and 1 more | 4 Mbed Tls, Fedora, Mbedtls and 1 more | 2026-06-05 | 7.5 High |
| Mbed TLS 2.x before 2.28.5 and 3.x before 3.5.0 has a Buffer Overflow. | ||||
| CVE-2024-28755 | 2 Mbed, Trustedfirmware | 2 Mbedtls, Mbed Tls | 2026-06-05 | 6.5 Medium |
| An issue was discovered in Mbed TLS 3.5.x before 3.6.0. When an SSL context was reset with the mbedtls_ssl_session_reset() API, the maximum TLS version to be negotiated was not restored to the configured one. An attacker was able to prevent an Mbed TLS server from establishing any TLS 1.3 connection, potentially resulting in a Denial of Service or forced version downgrade from TLS 1.3 to TLS 1.2. | ||||
| CVE-2021-45450 | 2 Fedoraproject, Trustedfirmware | 2 Fedora, Mbed Tls | 2026-06-05 | 7.5 High |
| In Mbed TLS before 2.28.0 and 3.x before 3.1.0, psa_cipher_generate_iv and psa_cipher_encrypt allow policy bypass or oracle-based decryption when the output buffer is at memory locations accessible to an untrusted application. | ||||
| CVE-2024-23775 | 2 Arm, Trustedfirmware | 2 Mbed Tls, Mbed Tls | 2026-06-05 | 7.5 High |
| Integer Overflow vulnerability in Mbed TLS 2.x before 2.28.7 and 3.x before 3.5.2, allows attackers to cause a denial of service (DoS) via mbedtls_x509_set_extension(). | ||||
| CVE-2024-23744 | 1 Trustedfirmware | 1 Mbed Tls | 2026-06-05 | 7.5 High |
| An issue was discovered in Mbed TLS 3.5.1. There is persistent handshake denial if a client sends a TLS 1.3 ClientHello without extensions. | ||||
| CVE-2024-28960 | 4 Arm, Fedoraproject, Mbed and 1 more | 6 Mbed Crypto, Mbed Tls, Fedora and 3 more | 2026-06-05 | 8.2 High |
| An issue was discovered in Mbed TLS 2.18.0 through 2.28.x before 2.28.8 and 3.x before 3.6.0, and Mbed Crypto. The PSA Crypto API mishandles shared memory. | ||||
| CVE-2022-46393 | 3 Arm, Fedoraproject, Trustedfirmware | 3 Mbed Tls, Fedora, Mbed Tls | 2026-06-05 | 9.8 Critical |
| An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. There is a potential heap-based buffer overflow and heap-based buffer over-read in DTLS if MBEDTLS_SSL_DTLS_CONNECTION_ID is enabled and MBEDTLS_SSL_CID_IN_LEN_MAX > 2 * MBEDTLS_SSL_CID_OUT_LEN_MAX. | ||||
| CVE-2026-34877 | 3 Arm, Mbed, Trustedfirmware | 3 Mbed Tls, Mbedtls, Mbed Tls | 2026-06-05 | 9.8 Critical |
| 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. | ||||