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OpenSSL — Vulnerabilities & Security Advisories 117

Browse all 117 CVE security advisories affecting OpenSSL. AI-powered Chinese analysis, POCs, and references for each vulnerability.

OpenSSL is an open-source toolkit implementing the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, primarily used to encrypt network traffic for web servers, email systems, and other internet services. Its widespread adoption makes it a critical infrastructure component, yet its complexity has historically led to numerous vulnerabilities. Common flaw classes include buffer overflows, memory corruption issues, and logic errors that can facilitate remote code execution or denial of service attacks. Notable incidents, such as the Heartbleed bug, exposed sensitive memory data, highlighting risks associated with complex cryptographic implementations. With approximately 99 recorded CVEs, the project emphasizes rigorous code auditing and timely patching to mitigate these risks. Developers must maintain strict version control and apply updates promptly to ensure secure communications, as unpatched instances remain vulnerable to exploitation by malicious actors seeking to intercept or manipulate data in transit.

Found 116 results / 117Clear Filters
CVE IDTitleCVSSSeverityPublished
CVE-2021-23841 Null pointer deref in X509_issuer_and_serial_hash() — OpenSSL 5.9 -2021-02-16
CVE-2021-23839 Incorrect SSLv2 rollback protection — OpenSSL 7.5 -2021-02-16
CVE-2021-23840 Integer overflow in CipherUpdate — OpenSSL 7.5 -2021-02-16
CVE-2020-1971 EDIPARTYNAME NULL pointer dereference — OpenSSL 5.9 -2020-12-08
CVE-2020-1968 Raccoon attack — OpenSSL 5.9 -2020-09-09
CVE-2020-1967 Segmentation fault in SSL_check_chain — OpenSSL 7.5 -2020-04-21
CVE-2019-1551 rsaz_512_sqr overflow bug on x86_64 — OpenSSL 9.1 -2019-12-06
CVE-2019-1547 ECDSA remote timing attack — OpenSSL 5.9 -2019-09-10
CVE-2019-1549 Fork Protection — OpenSSL 4.0 -2019-09-10
CVE-2019-1563 Padding Oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey — OpenSSL 3.7 -2019-09-10
CVE-2019-1552 Windows builds with insecure path defaults — OpenSSL 5.5 -2019-07-30
CVE-2019-1543 ChaCha20-Poly1305 with long nonces — OpenSSL 7.4 -2019-03-06
CVE-2019-1559 0-byte record padding oracle — OpenSSL 3.7 -2019-02-27
CVE-2018-0734 Timing attack against DSA — OpenSSL 5.9 -2018-10-30
CVE-2018-0735 Timing attack against ECDSA signature generation — OpenSSL 7.5 -2018-10-29
CVE-2018-0732 Client DoS due to large DH parameter — OpenSSL 7.5 -2018-06-12
CVE-2018-0737 Cache timing vulnerability in RSA Key Generation — OpenSSL 5.9 -2018-04-16
CVE-2018-0733 Incorrect CRYPTO_memcmp on HP-UX PA-RISC — OpenSSL 5.9 -2018-03-27
CVE-2018-0739 Constructed ASN.1 types with a recursive definition could exceed the stack — OpenSSL 7.5 -2018-03-27
CVE-2016-8610 OpenSSL 资源管理错误漏洞 — OpenSSLCWE-400 7.5 -2017-11-13
CVE-2016-7053 CMS Null dereference — OpenSSL 7.5 -2017-05-04
CVE-2016-7054 ChaCha20/Poly1305 heap-buffer-overflow — OpenSSL 7.5 -2017-05-04
CVE-2017-3730 Bad (EC)DHE parameters cause a client crash — OpenSSL 7.5 -2017-05-04
CVE-2017-3731 Truncated packet could crash via OOB read — OpenSSL 5.9 -2017-05-04
CVE-2017-3732 BN_mod_exp may produce incorrect results on x86_64 — OpenSSL 5.9 -2017-05-04
CVE-2017-3733 Encrypt-Then-Mac renegotiation crash — OpenSSL 7.5 -2017-05-04

This page lists every published CVE security advisory associated with OpenSSL. Each entry links to a detailed page with CVSS scoring, CWE classification, affected products and references. AI-generated Chinese analysis is provided for fast triage.