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Wolfssl

wolfssl

149 CVEs • 3 products

Products (3)

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Wolfssl
wolfssl
Wolfmqtt
wolfmqtt
Yassl
yassl

CVEs (149)

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CVSS
1Wolfssl
1Wolfssl
Jun 17, 2026
Jan 18, 2022
N/A· v4
9.1 CRITICAL· v3
6.4 MEDIUM· v2
wolfSSL 5.x before 5.1.1 uses non-random IV values in certain situations. This affects connections (without AEAD) using AES-CBC or DES3 with TLS 1.1 or 1.2 or DTLS 1.1 or 1.2. This occurs because of misplaced memory init...Show more
wolfSSL 5.x before 5.1.1 uses non-random IV values in certain situations. This affects connections (without AEAD) using AES-CBC or DES3 with TLS 1.1 or 1.2 or DTLS 1.1 or 1.2. This occurs because of misplaced memory initialization in BuildMessage in internal.c.Show less
1Wolfssl
1Wolfmqtt
Jun 17, 2026
Jan 1, 2022
N/A· v4
5.5 MEDIUM· v3
4.3 MEDIUM· v2
wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow in MqttClient_DecodePacket (called from MqttClient_WaitType and MqttClient_Subscribe).
1Wolfssl
1Wolfmqtt
Jun 17, 2026
Jan 1, 2022
N/A· v4
5.5 MEDIUM· v3
4.3 MEDIUM· v2
wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow in MqttClient_DecodePacket (called from MqttClient_WaitType and MqttClient_Unsubscribe).
1Wolfssl
1Wolfmqtt
Jun 17, 2026
Jan 1, 2022
N/A· v4
5.5 MEDIUM· v3
4.3 MEDIUM· v2
wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow in MqttClient_DecodePacket (called from MqttClient_WaitType and MqttClient_Connect).
1Wolfssl
1Wolfmqtt
Jun 17, 2026
Jan 1, 2022
N/A· v4
5.5 MEDIUM· v3
4.3 MEDIUM· v2
wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow in MqttDecode_Disconnect (called from MqttClient_DecodePacket and MqttClient_WaitType).
1Wolfssl
1Wolfmqtt
Jun 17, 2026
Jan 1, 2022
N/A· v4
5.5 MEDIUM· v3
4.3 MEDIUM· v2
wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow in MqttClient_DecodePacket (called from MqttClient_HandlePacket and MqttClient_WaitType).
1Wolfssl
1Wolfmqtt
Jun 17, 2026
Jan 1, 2022
N/A· v4
5.5 MEDIUM· v3
4.3 MEDIUM· v2
wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow (8 bytes) in MqttDecode_Publish (called from MqttClient_DecodePacket and MqttClient_HandlePacket).
1Wolfssl
1Wolfmqtt
Jun 17, 2026
Jan 1, 2022
N/A· v4
5.5 MEDIUM· v3
4.3 MEDIUM· v2
wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow (4 bytes) in MqttDecode_Publish (called from MqttClient_DecodePacket and MqttClient_HandlePacket).
1Wolfssl
1Wolfssl
Jun 17, 2026
Aug 12, 2021
N/A· v4
5.9 MEDIUM· v3
4.3 MEDIUM· v2
wolfSSL before 4.8.1 incorrectly skips OCSP verification in certain situations of irrelevant response data that contains the NoCheck extension.
1Wolfssl
1Wolfssl
Jun 17, 2026
Jul 21, 2021
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
wolfSSL 4.6.x through 4.7.x before 4.8.0 does not produce a failure outcome when the serial number in an OCSP request differs from the serial number in the OCSP response.
1Wolfssl
1Wolfssl
Jun 17, 2026
Jul 14, 2021
N/A· v4
4.9 MEDIUM· v3
4.0 MEDIUM· v2
In wolfSSL through 4.6.0, a side-channel vulnerability in base64 PEM file decoding allows system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-channel and side-channel attac...Show more
In wolfSSL through 4.6.0, a side-channel vulnerability in base64 PEM file decoding allows system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-channel and side-channel attack on software running in isolated environments that can be single stepped, especially Intel SGX.Show less
1Wolfssl
1Wolfssl
Jun 17, 2026
Jan 29, 2021
N/A· v4
8.1 HIGH· v3
6.8 MEDIUM· v2
DoTls13CertificateVerify in tls13.c in wolfSSL before 4.7.0 does not cease processing for certain anomalous peer behavior (sending an ED22519, ED448, ECC, or RSA signature without the corresponding certificate). The clie...Show more
DoTls13CertificateVerify in tls13.c in wolfSSL before 4.7.0 does not cease processing for certain anomalous peer behavior (sending an ED22519, ED448, ECC, or RSA signature without the corresponding certificate). The client side is affected because man-in-the-middle attackers can impersonate TLS 1.3 servers.Show less
1Wolfssl
1Wolfssl
Jun 17, 2026
Jan 6, 2021
N/A· v4
9.8 CRITICAL· v3
10.0 HIGH· v2
RsaPad_PSS in wolfcrypt/src/rsa.c in wolfSSL before 4.6.0 has an out-of-bounds write for certain relationships between key size and digest size.
1Wolfssl
1Wolfssl
Jun 17, 2026
Aug 24, 2020
N/A· v4
6.8 MEDIUM· v3
4.9 MEDIUM· v2
wolfSSL before 4.5.0 mishandles TLS 1.3 server data in the WAIT_CERT_CR state, within SanityCheckTls13MsgReceived() in tls13.c. This is an incorrect implementation of the TLS 1.3 client state machine. This allows attacke...Show more
wolfSSL before 4.5.0 mishandles TLS 1.3 server data in the WAIT_CERT_CR state, within SanityCheckTls13MsgReceived() in tls13.c. This is an incorrect implementation of the TLS 1.3 client state machine. This allows attackers in a privileged network position to completely impersonate any TLS 1.3 servers, and read or modify potentially sensitive information between clients using the wolfSSL library and these TLS servers.Show less
1Wolfssl
1Wolfssl
Jun 17, 2026
Aug 21, 2020
N/A· v4
5.3 MEDIUM· v3
5.0 MEDIUM· v2
An issue was discovered in the DTLS handshake implementation in wolfSSL before 4.5.0. Clear DTLS application_data messages in epoch 0 do not produce an out-of-order error. Instead, these messages are returned to the appl...Show more
An issue was discovered in the DTLS handshake implementation in wolfSSL before 4.5.0. Clear DTLS application_data messages in epoch 0 do not produce an out-of-order error. Instead, these messages are returned to the application.Show less
1Wolfssl
1Wolfssl
Jun 17, 2026
Aug 21, 2020
N/A· v4
7.0 HIGH· v3
6.9 MEDIUM· v2
An issue was discovered in wolfSSL before 4.5.0, when single precision is not employed. Local attackers can conduct a cache-timing attack against public key operations. These attackers may already have obtained sensitive...Show more
An issue was discovered in wolfSSL before 4.5.0, when single precision is not employed. Local attackers can conduct a cache-timing attack against public key operations. These attackers may already have obtained sensitive information if the affected system has been used for private key operations (e.g., signing with a private key).Show less
1Wolfssl
1Wolfssl
Jun 17, 2026
Aug 21, 2020
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An issue was discovered in wolfSSL before 4.5.0. It mishandles the change_cipher_spec (CCS) message processing logic for TLS 1.3. If an attacker sends ChangeCipherSpec messages in a crafted way involving more than one in...Show more
An issue was discovered in wolfSSL before 4.5.0. It mishandles the change_cipher_spec (CCS) message processing logic for TLS 1.3. If an attacker sends ChangeCipherSpec messages in a crafted way involving more than one in a row, the server becomes stuck in the ProcessReply() loop, i.e., a denial of service.Show less
1Wolfssl
1Wolfssl
Jun 17, 2026
Jun 25, 2020
N/A· v4
5.3 MEDIUM· v3
5.0 MEDIUM· v2
The private-key operations in ecc.c in wolfSSL before 4.4.0 do not use a constant-time modular inverse when mapping to affine coordinates, aka a "projective coordinates leak."
1Wolfssl
1Wolfssl
Jun 17, 2026
Apr 12, 2020
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
wolfSSL 4.3.0 has mulmod code in wc_ecc_mulmod_ex in ecc.c that does not properly resist timing side-channel attacks.
1Wolfssl
1Wolfssl
Nov 21, 2024
Jan 28, 2020
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
wolfSSL CyaSSL before 2.9.4 allows remote attackers to have unspecified impact via multiple calls to the CyaSSL_read function which triggers an out-of-bounds read when an error occurs, related to not checking the return...Show more
wolfSSL CyaSSL before 2.9.4 allows remote attackers to have unspecified impact via multiple calls to the CyaSSL_read function which triggers an out-of-bounds read when an error occurs, related to not checking the return code and MAC verification failure.Show less