CVE-2026-6681

The PKCS7 decode path ignores the caller-supplied output buffer size outputSz, allowing decoded content to be written past the bounds of the provided buffer. This affects wolfSSL 5.9.0 and earlier and was fixed in the 5.9.1 release...

CVE-2026-55961 wolfSSL_PKCS7_verify() reports success for degenerate (certs-only) PKCS#7 with no signer

wolfSSLPKCS7verify returning success for a degenerate certs-only PKCS7 object that contains no signer. Such an object has empty signerInfos, so the underlying signed-data verification succeeds without authenticating any content. The compatibility-layer verify path now rejects the object when no...

OpenSSL 资源管理错误漏洞

OpenSSL is an open-source encryption library developed by the OpenSSL team that enables secure implementation of Secure Sockets Layer SSLv2/v3 and Secure Transport Layer TLSv1 protocols. This product supports various encryption algorithms, including symmetric ciphers, hash algorithms, and secure...

PT-2026-47844

Name of the Vulnerable Software and Affected Versions OpenSSL version 4.0 OpenSSL version 3.6 OpenSSL version 3.5 OpenSSL version 3.4 OpenSSL version 3.0 OpenSSL version 1.1.1 OpenSSL version 1.0.2 Description A use-after-free condition occurs during PKCS7 signature verification when processing a...

CVE-2026-5392 wolfSSL heap OOB read in PKCS7 SignedData streaming

Heap out-of-bounds read in PKCS7 parsing. A crafted PKCS7 message can trigger an OOB read on the heap. The missing bounds check is in the indefinite-length end-of-content verification loop in PKCS7VerifySignedData...

CVE-2026-0819

A stack buffer overflow vulnerability exists in wolfSSL's PKCS7 SignedData encoding functionality. In wcPKCS7BuildSignedAttributes, when adding custom signed attributes, the code passes an incorrect capacity value esd-signedAttribsCount to EncodeAttributes instead of the remaining available space...

PT-2026-22704

Name of the Vulnerable Software and Affected Versions AWS-LC versions prior to 1.69.0 Description A flaw exists in the PKCS7 verify function within AWS-LC that permits an unauthenticated user to circumvent signature verification when handling PKCS7 objects containing Authenticated Attributes. Thi...

Silicon Labs Gecko SDK Security Vulnerability

The Silicon Labs Gecko SDK GSDK is an open source library from Silicon Labs. Combines the Silicon Labs Wireless Software Development Kit SDK and the Gecko platform into one integrated package. A security vulnerability exists in Silicon Labs Gecko SDK 4.4.0 and prior versions, which stems from a...

UBUNTU-CVE-2023-0216

An invalid pointer dereference on read can be triggered when an application tries to load malformed PKCS7 data with the d2iPKCS7, d2iPKCS7bio or d2iPKCS7fp functions. The result of the dereference is an application crash which could lead to a denial of service attack. The TLS implementation in...

A vulnerability found in gnutls. This security flaw happens because of a double free error occurs during verification of pkcs7 signatures in gnutls_pkcs7_verify function.

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NSS (Network Security Services) versions prior to 3.73 or 3.68.1 ESR are vulnerable to a heap overflow when handling DER-encoded DSA or RSA-PSS signatures. Applications using NSS for handling signatures encoded within CMS S/MIME PKCS \#7 or PKCS \#12 are likely to be impacted. Applications using NSS for certificate validation or other TLS X.509 OCSP or CRL functionality may be impacted depending on how they configure NSS. *Note: This vulnerability does NOT impact Mozilla Firefox.* However email clients and PDF viewers that use NSS for signature verification such as Thunderbird LibreOffice Evolution and Evince are believed to be impacted. This vulnerability affects NSS < 3.73 and NSS < 3.68.1.

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openssl: CMS and PKCS#7 Bleichenbacher attack

The implementation of Cryptographic Message Syntax CMS and PKCS 7 in OpenSSL before 0.9.8u and 1.x before 1.0.0h does not properly restrict certain oracle behavior, which makes it easier for context-dependent attackers to decrypt data via a Million Message Attack MMA adaptive chosen ciphertext...

DEBIAN-CVE-2012-0884

The implementation of Cryptographic Message Syntax CMS and PKCS 7 in OpenSSL before 0.9.8u and 1.x before 1.0.0h does not properly restrict certain oracle behavior, which makes it easier for context-dependent attackers to decrypt data via a Million Message Attack MMA adaptive chosen ciphertext...

UBUNTU-CVE-2012-0884

The implementation of Cryptographic Message Syntax CMS and PKCS 7 in OpenSSL before 0.9.8u and 1.x before 1.0.0h does not properly restrict certain oracle behavior, which makes it easier for context-dependent attackers to decrypt data via a Million Message Attack MMA adaptive chosen ciphertext...