CVE-2026-5448 1-2 Byte Buffer Overflow in wolfSSL_X509_notAfter/notBefore

X.509 date buffer overflow in wolfSSLX509notAfter / wolfSSLX509notBefore. A buffer overflow may occur when parsing date fields from a crafted X.509 certificate via the compatibility layer API. This is only triggered when calling these two APIs directly from an application, and does not affect TLS...

CVE-2026-5448

X.509 date buffer overflow in wolfSSLX509notAfter / wolfSSLX509notBefore. A buffer overflow may occur when parsing date fields from a crafted X.509 certificate via the compatibility layer API. This is only triggered when calling these two APIs directly from an application, and does not affect TLS...

CVE-2026-5448

X.509 date buffer overflow in wolfSSLX509notAfter / wolfSSLX509notBefore. A buffer overflow may occur when parsing date fields from a crafted X.509 certificate via the compatibility layer API. This is only triggered when calling these two APIs directly from an application, and does not affect TLS...

📄 Cosign 3.0.4 Certificate Chain Validation Bypass

A logic flaw in the certificate verification process of Cosign versions 3.0.4 and below allows signatures to be accepted even when the issuing Intermediate Certificate Authority CA has already expired. This proof of concept generates a chain that can be tested with this software in order to prove...

Microsoft to remove WoSign and StartCom certificates in Windows 10

Microsoft has concluded that the Chinese Certificate Authorities CAs WoSign and StartCom have failed to maintain the standards required by our Trusted Root Program. Observed unacceptable security practices include back-dating SHA-1 certificates, mis-issuances of certificates, accidental certifica...

Mozilla Wants to Drop WoSign as Trusted CA

Mozilla has accused a Chinese Certificate Authority of back-dating SHA-1 certificates to get around restrictions barring deprecated certs from being trusted, and is ready to ban the CA for one year. The back-dating is just one of many violations derived after a lengthy investigation of WoSign and...

PHP openssl_x509_parse() Memory Corruption Vulnerability

The PHP function opensslx509parse uses a helper function called asn1timetotimet to convert timestamps from ASN1 string format into integer timestamp values. The parser within this helper function is not binary safe and can therefore be tricked to write up to five NUL bytes outside of an allocated...

php: memory corruption in openssl_x509_parse()

The asn1timetotimet function in ext/openssl/openssl.c in PHP before 5.3.28, 5.4.x before 5.4.23, and 5.5.x before 5.5.7 does not properly parse 1 notBefore and 2 notAfter timestamps in X.509 certificates, which allows remote attackers to execute arbitrary code or cause a denial of service memory...

php: memory corruption in openssl_x509_parse()

The asn1timetotimet function in ext/openssl/openssl.c in PHP before 5.3.28, 5.4.x before 5.4.23, and 5.5.x before 5.5.7 does not properly parse 1 notBefore and 2 notAfter timestamps in X.509 certificates, which allows remote attackers to execute arbitrary code or cause a denial of service memory...

php: memory corruption in openssl_x509_parse()

The asn1timetotimet function in ext/openssl/openssl.c in PHP before 5.3.28, 5.4.x before 5.4.23, and 5.5.x before 5.5.7 does not properly parse 1 notBefore and 2 notAfter timestamps in X.509 certificates, which allows remote attackers to execute arbitrary code or cause a denial of service memory...

php: memory corruption in openssl_x509_parse()

The asn1timetotimet function in ext/openssl/openssl.c in PHP before 5.3.28, 5.4.x before 5.4.23, and 5.5.x before 5.5.7 does not properly parse 1 notBefore and 2 notAfter timestamps in X.509 certificates, which allows remote attackers to execute arbitrary code or cause a denial of service memory...