OpenSSL
TLS/SSL and cryptography toolkit.
Source repositories
CVEs (370)
| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2024-0727 | Med | 0.29 | 5.5 | 0.03 | Jan 26, 2024 | Issue summary: Processing a maliciously formatted PKCS12 file may lead OpenSSL to crash leading to a potential Denial of Service attack Impact summary: Applications loading files in the PKCS12 format from untrusted sources might terminate abruptly. A file in PKCS12 format can… | ||
| CVE-2016-2178 | Med | 0.29 | 5.5 | 0.01 | Jun 20, 2016 | The dsa_sign_setup function in crypto/dsa/dsa_ossl.c in OpenSSL through 1.0.2h does not properly ensure the use of constant-time operations, which makes it easier for local users to discover a DSA private key via a timing side-channel attack. | ||
| CVE-2024-4603 | Med | 0.28 | 5.3 | 0.01 | May 16, 2024 | Issue summary: Checking excessively long DSA keys or parameters may be very slow. Impact summary: Applications that use the functions EVP_PKEY_param_check() or EVP_PKEY_public_check() to check a DSA public key or DSA parameters may experience long delays. Where the key or… | ||
| CVE-2026-42769 | Med | 0.27 | 5.3 | 0.00 | Jun 9, 2026 | Issue Summary: An error in the callback used to verify the certificate provided in a Root CA key update Certificate Management Protocol (CMP) message response rendered the certificate validation ineffectual, which could lead to escalation of credentials from the Registration… | ||
| CVE-2018-5407 | Med | 0.27 | 4.7 | 0.03 | Nov 15, 2018 | Simultaneous Multi-threading (SMT) in processors can enable local users to exploit software vulnerable to timing attacks via a side-channel timing attack on 'port contention'. | ||
| CVE-2026-35188 | Med | 0.26 | 5.0 | 0.00 | Jun 9, 2026 | Issue summary: A malicious server can exploit TLS OCSP stapling by delivering a crafted response through the status_request extension, triggering a double-free in the client's certificate verification path. Impact summary: Successful exploitation allows an attacker to corrupt… | ||
| CVE-2025-69418 | Med | 0.26 | 4.0 | 0.00 | Jan 27, 2026 | Issue summary: When using the low-level OCB API directly with AES-NI orother hardware-accelerated code paths, inputs whose length is not a multipleof 16 bytes can leave the final partial block unencrypted and unauthenticated.Impact summary: The trailing 1-15… | ||
| CVE-2016-0702 | Med | 0.26 | 5.1 | 0.02 | Mar 3, 2016 | The MOD_EXP_CTIME_COPY_FROM_PREBUF function in crypto/bn/bn_exp.c in OpenSSL 1.0.1 before 1.0.1s and 1.0.2 before 1.0.2g does not properly consider cache-bank access times during modular exponentiation, which makes it easier for local users to discover RSA keys by running a… | ||
| CVE-2026-45446 | Med | 0.24 | 4.8 | 0.00 | Jun 9, 2026 | Issue summary: The implementations of AES-SIV (RFC 5297) and AES-GCM-SIV (RFC 8452) mishandle the authentication of AAD (Additional Authenticated Data) with an empty ciphertext allowing a forgery of such messages. Impact summary: An attacker can forge empty messages with… | ||
| CVE-2021-23839 | Low | 0.24 | 3.7 | 0.03 | Feb 16, 2021 | OpenSSL 1.0.2 supports SSLv2. If a client attempts to negotiate SSLv2 with a server that is configured to support both SSLv2 and more recent SSL and TLS versions then a check is made for a version rollback attack when unpadding an RSA signature. Clients that support SSL or TLS… | ||
| CVE-2020-1968 | Low | 0.24 | 3.7 | 0.05 | Sep 9, 2020 | The Raccoon attack exploits a flaw in the TLS specification which can lead to an attacker being able to compute the pre-master secret in connections which have used a Diffie-Hellman (DH) based ciphersuite. In such a case this would result in the attacker being able to eavesdrop… | ||
| CVE-2019-1563 | Low | 0.24 | 3.7 | 0.04 | Sep 10, 2019 | In situations where an attacker receives automated notification of the success or failure of a decryption attempt an attacker, after sending a very large number of messages to be decrypted, can recover a CMS/PKCS7 transported encryption key or decrypt any RSA encrypted message… | ||
| CVE-2025-42927 | Low | 0.22 | 3.4 | 0.00 | Sep 9, 2025 | SAP NetWeaver AS Java application uses Adobe Document Service, installed with a vulnerable version of OpenSSL.Successful exploitation of known vulnerabilities in the outdated OpenSSL library would allow user with high system privileges to access and modify system… | ||
| CVE-2019-1552 | Low | 0.22 | 3.3 | 0.01 | Jul 30, 2019 | OpenSSL has internal defaults for a directory tree where it can find a configuration file as well as certificates used for verification in TLS. This directory is most commonly referred to as OPENSSLDIR, and is configurable with the --prefix / --openssldir configuration options.… | ||
| CVE-2024-9143 | Med | 0.21 | 4.3 | 0.06 | Oct 16, 2024 | Issue summary: Use of the low-level GF(2^m) elliptic curve APIs with untrusted explicit values for the field polynomial can lead to out-of-bounds memory reads or writes. Impact summary: Out of bound memory writes can lead to an application crash or even a possibility of a… | ||
| CVE-2024-13176 | Med | 0.20 | 4.1 | 0.01 | Jan 20, 2025 | Issue summary: A timing side-channel which could potentially allow recovering the private key exists in the ECDSA signature computation. Impact summary: A timing side-channel in ECDSA signature computations could allow recovering the private key by an attacker. However,… | ||
| CVE-2025-41721 | Low | 0.18 | 2.7 | 0.00 | Oct 22, 2025 | A high privileged remote attacker can influence the parameters passed to the openssl command due to improper neutralization of special elements when adding a password protected self-signed certificate. | ||
| CVE-2026-42770 | Low | 0.17 | 3.7 | 0.01 | Jun 9, 2026 | Issue summary: When EVP_PKEY_derive_set_peer() is called with a DHX (X9.42) peer key, the peer key is not properly checked for the subgroup membership. Impact summary: A malicious peer which presents an X9.42 key carrying the victim's p and g parameters, a forged q = r (a small… | ||
| CVE-2026-42768 | Low | 0.17 | 3.7 | 0.01 | Jun 9, 2026 | Issue summary: The CMS_decrypt and PKCS7_decrypt functions are vulnerable to Bleichenbacher-style attack when an attacker is able to provide the CMS or S/MIME messages and observe the error code and/or decryption output. Impact summary: The Bleichenbacher-style attack allows an… | ||
| CVE-2025-3416 | Low | 0.17 | 3.7 | 0.01 | Apr 8, 2025 | A flaw was found in OpenSSL's handling of the properties argument in certain functions. This vulnerability can allow use-after-free exploitation, which may result in undefined behavior or incorrect property parsing, leading to OpenSSL treating the input as an empty string. |
- risk 0.29cvss 5.5epss 0.03
Issue summary: Processing a maliciously formatted PKCS12 file may lead OpenSSL to crash leading to a potential Denial of Service attack Impact summary: Applications loading files in the PKCS12 format from untrusted sources might terminate abruptly. A file in PKCS12 format can…
- risk 0.29cvss 5.5epss 0.01
The dsa_sign_setup function in crypto/dsa/dsa_ossl.c in OpenSSL through 1.0.2h does not properly ensure the use of constant-time operations, which makes it easier for local users to discover a DSA private key via a timing side-channel attack.
- risk 0.28cvss 5.3epss 0.01
Issue summary: Checking excessively long DSA keys or parameters may be very slow. Impact summary: Applications that use the functions EVP_PKEY_param_check() or EVP_PKEY_public_check() to check a DSA public key or DSA parameters may experience long delays. Where the key or…
- risk 0.27cvss 5.3epss 0.00
Issue Summary: An error in the callback used to verify the certificate provided in a Root CA key update Certificate Management Protocol (CMP) message response rendered the certificate validation ineffectual, which could lead to escalation of credentials from the Registration…
- risk 0.27cvss 4.7epss 0.03
Simultaneous Multi-threading (SMT) in processors can enable local users to exploit software vulnerable to timing attacks via a side-channel timing attack on 'port contention'.
- risk 0.26cvss 5.0epss 0.00
Issue summary: A malicious server can exploit TLS OCSP stapling by delivering a crafted response through the status_request extension, triggering a double-free in the client's certificate verification path. Impact summary: Successful exploitation allows an attacker to corrupt…
- risk 0.26cvss 4.0epss 0.00
Issue summary: When using the low-level OCB API directly with AES-NI orother hardware-accelerated code paths, inputs whose length is not a multipleof 16 bytes can leave the final partial block unencrypted and unauthenticated.Impact summary: The trailing 1-15…
- risk 0.26cvss 5.1epss 0.02
The MOD_EXP_CTIME_COPY_FROM_PREBUF function in crypto/bn/bn_exp.c in OpenSSL 1.0.1 before 1.0.1s and 1.0.2 before 1.0.2g does not properly consider cache-bank access times during modular exponentiation, which makes it easier for local users to discover RSA keys by running a…
- risk 0.24cvss 4.8epss 0.00
Issue summary: The implementations of AES-SIV (RFC 5297) and AES-GCM-SIV (RFC 8452) mishandle the authentication of AAD (Additional Authenticated Data) with an empty ciphertext allowing a forgery of such messages. Impact summary: An attacker can forge empty messages with…
- risk 0.24cvss 3.7epss 0.03
OpenSSL 1.0.2 supports SSLv2. If a client attempts to negotiate SSLv2 with a server that is configured to support both SSLv2 and more recent SSL and TLS versions then a check is made for a version rollback attack when unpadding an RSA signature. Clients that support SSL or TLS…
- risk 0.24cvss 3.7epss 0.05
The Raccoon attack exploits a flaw in the TLS specification which can lead to an attacker being able to compute the pre-master secret in connections which have used a Diffie-Hellman (DH) based ciphersuite. In such a case this would result in the attacker being able to eavesdrop…
- risk 0.24cvss 3.7epss 0.04
In situations where an attacker receives automated notification of the success or failure of a decryption attempt an attacker, after sending a very large number of messages to be decrypted, can recover a CMS/PKCS7 transported encryption key or decrypt any RSA encrypted message…
- risk 0.22cvss 3.4epss 0.00
SAP NetWeaver AS Java application uses Adobe Document Service, installed with a vulnerable version of OpenSSL.Successful exploitation of known vulnerabilities in the outdated OpenSSL library would allow user with high system privileges to access and modify system…
- risk 0.22cvss 3.3epss 0.01
OpenSSL has internal defaults for a directory tree where it can find a configuration file as well as certificates used for verification in TLS. This directory is most commonly referred to as OPENSSLDIR, and is configurable with the --prefix / --openssldir configuration options.…
- risk 0.21cvss 4.3epss 0.06
Issue summary: Use of the low-level GF(2^m) elliptic curve APIs with untrusted explicit values for the field polynomial can lead to out-of-bounds memory reads or writes. Impact summary: Out of bound memory writes can lead to an application crash or even a possibility of a…
- risk 0.20cvss 4.1epss 0.01
Issue summary: A timing side-channel which could potentially allow recovering the private key exists in the ECDSA signature computation. Impact summary: A timing side-channel in ECDSA signature computations could allow recovering the private key by an attacker. However,…
- risk 0.18cvss 2.7epss 0.00
A high privileged remote attacker can influence the parameters passed to the openssl command due to improper neutralization of special elements when adding a password protected self-signed certificate.
- risk 0.17cvss 3.7epss 0.01
Issue summary: When EVP_PKEY_derive_set_peer() is called with a DHX (X9.42) peer key, the peer key is not properly checked for the subgroup membership. Impact summary: A malicious peer which presents an X9.42 key carrying the victim's p and g parameters, a forged q = r (a small…
- risk 0.17cvss 3.7epss 0.01
Issue summary: The CMS_decrypt and PKCS7_decrypt functions are vulnerable to Bleichenbacher-style attack when an attacker is able to provide the CMS or S/MIME messages and observe the error code and/or decryption output. Impact summary: The Bleichenbacher-style attack allows an…
- risk 0.17cvss 3.7epss 0.01
A flaw was found in OpenSSL's handling of the properties argument in certain functions. This vulnerability can allow use-after-free exploitation, which may result in undefined behavior or incorrect property parsing, leading to OpenSSL treating the input as an empty string.
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