OP
Product
OpenSSL
by OpenSSL · last CVE Sep 29, 2026
On CISA KEVExploited in the wild
318
CVEs
1
On KEV
9.8
Max CVSS
14
New 30D
Severity mix
Critical 17High 87Medium 75Low 13
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CVECVSSEPSSPublishedSummary · affected versions
CVE-2014-0160
In wildKEV
7.5
100%
Apr 7
OpenSSL Information Disclosure Vulnerability
Affected: 1.0.1 before 1.0.1g
CVE-2026-45447
8.8
4%
Jun 9
Heap Use-After-Free in the PKCS7_verify() Function
Affected: 4.0.0 before 4.0.1; 3.6.0 before 3.6.3; 3.5.0 before 3.5.7; 3.4.0 before 3.4.6; 3.0.0 before 3.0.21; 1.1.1 before 1.1.1zh; +1 more
CVE-2025-15467
8.8
75%
Jan 27
Stack buffer overflow in CMS (Auth)EnvelopedData parsing
Affected: 3.6.0 before 3.6.1; 3.5.0 before 3.5.5; 3.4.0 before 3.4.4; 3.3.0 before 3.3.6; 3.0.0 before 3.0.19
CVE-2026-84782
8.2
1%
Sep 29
DTLS Retransmits Handshake Messages From a Stale Buffer Offset
Affected: 4.0.0 before 4.0.3; 3.6.0 before 3.6.5; 3.5.0 before 3.5.9; 3.4.0 before 3.4.8; 3.0.0 before 3.0.23; 1.1.1 before 1.1.1zj; +1 more
CVE-2016-2176
8.2
23%
May 5
The X509_NAME_oneline function in crypto/x509/x509_obj.c in OpenSSL before 1.0.1t and 1.0.2 before 1.0.2h allows remote attackers to obtain sensitive information from process…
Affected: through 1.0.1s; 1.0.2; 1.0.2; 1.0.2; 1.0.2; 1.0.2a; +6 more
CVE-2026-7383
8.1
1%
Jun 9
Possible Heap Buffer Overflow in ASN.1 Multibyte String Conversion
Affected: 4.0.0 before 4.0.1; 3.6.0 before 3.6.3; 3.5.0 before 3.5.7; 3.4.0 before 3.4.6; 3.0.0 before 3.0.21; 1.1.1 before 1.1.1zh; +1 more
CVE-2026-28387
8.1
1%
Apr 7
Potential Use-after-free in DANE Client Code
Affected: 3.6.0 before 3.6.2; 3.5.0 before 3.5.6; 3.4.0 before 3.4.5; 3.3.0 before 3.3.7; 3.0.0 before 3.0.20; 1.1.1 before 1.1.1zg
CVE-2023-4807
7.8
2%
Sep 8
POLY1305 MAC implementation corrupts XMM registers on Windows
Affected: 3.1.0 before 3.1.3; 3.0.0 before 3.0.11; 1.1.1 before 1.1.1w
CVE-2026-84784
7.5
1%
Sep 29
QUIC: Unbounded RETIRE_CONNECTION_ID Backlog
Affected: 4.0.0 before 4.0.3; 3.6.0 before 3.6.5; 3.5.0 before 3.5.9; 3.4.0 before 3.4.8
CVE-2026-84783
7.5
0%
Sep 29
Use-After-Free in X.509 Extension Cache Under Concurrent Use
Affected: 4.0.0 before 4.0.3
CVE-2026-72897
7.5
0%
Sep 29
Out-of-Bounds Access After SSL_set_SSL_CTX() During a Handshake
Affected: 4.0.0 before 4.0.3; 3.6.0 before 3.6.5; 3.5.0 before 3.5.9; 3.4.0 before 3.4.8
CVE-2026-54873
7.5
1%
Sep 29
QUIC STREAM Fragment Metadata DoS
Affected: 4.0.0 before 4.0.3; 3.6.0 before 3.6.5; 3.5.0 before 3.5.9; 3.4.0 before 3.4.8
CVE-2026-63076
7.5
2%
Aug 25
Invalid Pointer Dereference in CMP Server via Crafted protectionAlg
Affected: 4.0.0 before 4.0.2; 3.6.0 before 3.6.4; 3.5.0 before 3.5.8; 3.4.0 before 3.4.7; 3.0.0 before 3.0.22
CVE-2026-63075
7.5
1%
Aug 25
QUIC ACK-only Packet Retention Can Cause Memory Exhaustion
Affected: 4.0.0 before 4.0.2; 3.6.0 before 3.6.4; 3.5.0 before 3.5.8; 3.4.0 before 3.4.7
CVE-2026-63072
7.5
1%
Aug 25
Heap Buffer Overflow in CMS Key Unwrapping
Affected: 4.0.0 before 4.0.2; 3.6.0 before 3.6.4; 3.5.0 before 3.5.8; 3.4.0 before 3.4.7; 3.0.0 before 3.0.22; 1.1.1 before 1.1.1zi
CVE-2026-54874
7.5
1%
Aug 25
Excessive Memory Use Buffering DTLS Records for a Future Epoch
Affected: 4.0.0 before 4.0.2; 3.6.0 before 3.6.4; 3.5.0 before 3.5.8; 3.4.0 before 3.4.7; 3.0.0 before 3.0.22; 1.1.1 before 1.1.1zi; +1 more
CVE-2026-18798
7.5
2%
Aug 25
QUIC Server May Trigger Double Free When Processing INITIAL Packet
Affected: 4.0.0 before 4.0.2; 3.6.0 before 3.6.4; 3.5.0 before 3.5.8
CVE-2026-14457
7.5
1%
Aug 25
RPK Server Signature Algorithm Selection Can Dereference a Missing Certificate
Affected: 4.0.0 before 4.0.2; 3.6.0 before 3.6.4; 3.5.0 before 3.5.8; 3.4.0 before 3.4.7
CVE-2026-14456
7.5
1%
Aug 13
Unbounded Memory Growth in QUIC Server Incoming Channel Queue
Affected: 4.0.0 before 4.0.2; 3.6.0 before 3.6.4; 3.5.0 before 3.5.8
CVE-2026-54876
7.5
1%
Aug 5
Client-Side Memory Leak in OCSP Response Checking
Affected: 4.0.0 before 4.0.2; 3.6.0 before 3.6.4
CVE-2026-45445
7.5
1%
Jun 9
AES-OCB IV Ignored on EVP_Cipher() Path
Affected: 4.0.0 before 4.0.1; 3.6.0 before 3.6.3; 3.5.0 before 3.5.7; 3.4.0 before 3.4.6; 3.0.0 before 3.0.21
CVE-2026-42765
7.5
1%
Jun 9
NULL Dereference in Certificate Verification with OCSP Checking
Affected: 4.0.0 before 4.0.1; 3.6.0 before 3.6.3
CVE-2026-42764
7.5
1%
Jun 9
NULL Pointer Dereference in QUIC Server Initial Packet Handling
Affected: 4.0.0 before 4.0.1; 3.6.0 before 3.6.3; 3.5.0 before 3.5.7
CVE-2026-34183
7.5
1%
Jun 9
Unbounded Memory Growth in the QUIC PATH_CHALLENGE Handler
Affected: 4.0.0 before 4.0.1; 3.6.0 before 3.6.3; 3.5.0 before 3.5.7; 3.4.0 before 3.4.6
CVE-2026-34180
7.5
1%
Jun 9
Heap Buffer Over-read in ASN.1 Content Parsing
Affected: 4.0.0 before 4.0.1; 3.6.0 before 3.6.3; 3.5.0 before 3.5.7; 3.4.0 before 3.4.6; 3.0.0 before 3.0.21; 1.1.1 before 1.1.1zh; +1 more
CVE-2026-9076
7.5
1%
Jun 9
Out-of-Bounds Read in CMS Password-Based Decryption
Affected: 4.0.0 before 4.0.1; 3.6.0 before 3.6.3; 3.5.0 before 3.5.7; 3.4.0 before 3.4.6; 3.0.0 before 3.0.21; 1.1.1 before 1.1.1zh; +1 more
CVE-2026-31790
7.5
1%
Apr 7
Incorrect Failure Handling in RSA KEM RSASVE Encapsulation
Affected: 3.6.0 before 3.6.2; 3.5.0 before 3.5.6; 3.4.0 before 3.4.5; 3.3.0 before 3.3.7; 3.0.0 before 3.0.20
CVE-2026-28390
7.5
1%
Apr 7
Possible NULL Dereference When Processing CMS KeyTransportRecipientInfo
Affected: 3.6.0 before 3.6.2; 3.5.0 before 3.5.6; 3.4.0 before 3.4.5; 3.3.0 before 3.3.7; 3.0.0 before 3.0.20; 1.1.1 before 1.1.1zg; +1 more
CVE-2026-28389
7.5
1%
Apr 7
Possible NULL Dereference When Processing CMS KeyAgreeRecipientInfo
Affected: 3.6.0 before 3.6.2; 3.5.0 before 3.5.6; 3.4.0 before 3.4.5; 3.3.0 before 3.3.7; 3.0.0 before 3.0.20; 1.1.1 before 1.1.1zg; +1 more
CVE-2026-28388
7.5
1%
Apr 7
NULL Pointer Dereference When Processing a Delta CRL
Affected: 3.6.0 before 3.6.2; 3.5.0 before 3.5.6; 3.4.0 before 3.4.5; 3.3.0 before 3.3.7; 3.0.0 before 3.0.20; 1.1.1 before 1.1.1zg; +1 more
CVE-2026-28386
7.5
0%
Apr 7
Out-of-bounds Read in AES-CFB-128 on X86-64 with AVX-512 Support
Affected: 3.6.0 before 3.6.2
CVE-2025-69421
7.5
1%
Jan 27
NULL Pointer Dereference in PKCS12_item_decrypt_d2i_ex function
Affected: 3.6.0 before 3.6.1; 3.5.0 before 3.5.5; 3.4.0 before 3.4.4; 3.3.0 before 3.3.6; 3.0.0 before 3.0.19; 1.1.1 before 1.1.1ze; +1 more
CVE-2025-69420
7.5
1%
Jan 27
Missing ASN1_TYPE validation in TS_RESP_verify_response() function
Affected: 3.6.0 before 3.6.1; 3.5.0 before 3.5.5; 3.4.0 before 3.4.4; 3.3.0 before 3.3.6; 3.0.0 before 3.0.19; 1.1.1 before 1.1.1ze
CVE-2025-9230
7.5
2%
Sep 30
Out-of-bounds read & write in RFC 3211 KEK Unwrap
Affected: 3.5.0 before 3.5.4; 3.4.0 before 3.4.3; 3.3.0 before 3.3.5; 3.2.0 before 3.2.6; 3.0.0 before 3.0.18; 1.1.1 before 1.1.1zd; +1 more
CVE-2024-6119
7.5
67%
Sep 3
Possible denial of service in X.509 name checks
Affected: 3.3.0 before 3.3.2; 3.2.0 before 3.2.3; 3.1.0 before 3.1.7; 3.0.0 before 3.0.15
CVE-2023-5363
7.5
4%
Oct 24
Incorrect cipher key & IV length processing
Affected: 3.0.0 before 3.0.12; 3.1.0 before 3.1.4
CVE-2023-0464
7.5
4%
Mar 22
Excessive Resource Usage Verifying X.509 Policy Constraints
Affected: 3.1.0 before 3.1.1; 3.0.0 before 3.0.9; 1.1.1 before 1.1.1u; 1.0.2 before 1.0.2zh
CVE-2023-0401
7.5
2%
Feb 8
A NULL pointer can be dereferenced when signatures are being verified on PKCS7 signed or signedAndEnveloped data
Affected: 3.0.0 through 3.0.7
CVE-2023-0217
7.5
2%
Feb 8
An invalid pointer dereference on read can be triggered when an application tries to check a malformed DSA public key by the EVP_PKEY_public_check() function
Affected: 3.0.0 through 3.0.7
CVE-2023-0216
7.5
2%
Feb 8
An invalid pointer dereference on read can be triggered when an application tries to load malformed PKCS7 data with the d2i_PKCS7(), d2i_PKCS7_bio() or d2i_PKCS7_fp() functions
Affected: 3.0.0 through 3.0.7
CVE-2022-4450
7.5
29%
Feb 8
Double free after calling PEM_read_bio_ex
Affected: 3.0.0 before 3.0.8; 1.1.1 before 1.1.1t
CVE-2023-0215
7.5
5%
Feb 8
Use-after-free following BIO_new_NDEF
Affected: 3.0.0 before 3.0.8; 1.1.1 before 1.1.1t; 1.0.2 before 1.0.2zg
CVE-2022-3996
7.5
1%
Dec 13
If an X.509 certificate contains a malformed policy constraint and policy processing is enabled, then a write lock will be taken twice recursively
Affected: 3.0.0 through 3.0.7
CVE-2022-3602
7.5
91%
Nov 1
X.509 Email Address 4-byte Buffer Overflow
Affected: Fixed in OpenSSL 3.0.7 (Affected 3.0.0,3.0.1,3.0.2,3.0.3,3.0.4,3.0.5,3.0.6)
CVE-2022-3786
7.5
92%
Nov 1
X.509 Email Address Variable Length Buffer Overflow
Affected: 3.0.0 before 3.0.7
CVE-2022-3358
7.5
4%
Oct 11
Using a Custom Cipher with NID_undef may lead to NULL encryption
Affected: Fixed in OpenSSL 3.0.6 (Affected 3.0.0-3.0.5)
CVE-2022-1473
7.5
5%
May 3
Resource leakage when decoding certificates and keys
Affected: Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2)
CVE-2022-0778
7.5
73%
Mar 15
Infinite loop in BN_mod_sqrt() reachable when parsing certificates
Affected: Fixed in OpenSSL 3.0.2 (Affected 3.0.0,3.0.1); Fixed in OpenSSL 1.1.1n (Affected 1.1.1-1.1.1m); Fixed in OpenSSL 1.0.2zd (Affected 1.0.2-1.0.2zc)
CVE-2021-4044
7.5
50%
Dec 14
Internally libssl in OpenSSL calls X509_verify_cert() on the client side to verify a certificate supplied by a server
Affected: before 1.0.2; 1.1.0; 3.0.0
CVE-2021-23840
7.5
51%
Feb 16
Calls to EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate may overflow the output length argument in some cases where the input length is close to the maximum permissable…
Affected: 1.0.2 before 1.0.2y; 1.1.1 before 1.1.1j
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