CVE-2026-5446

In wolfSSL, ARIA-GCM cipher suites used in TLS 1.2 and DTLS 1.2 reuse an identical 12-byte GCM nonce for every application-data record. Because wcAriaEncrypt is stateless and passes the caller-supplied IV verbatim to the MagicCrypto SDK with no internal counter, and because the explicit IV is...

CVE-2026-5446 wolfSSL ARIA-GCM TLS 1.2/DTLS 1.2 GCM nonce reuse

In wolfSSL, ARIA-GCM cipher suites used in TLS 1.2 and DTLS 1.2 reuse an identical 12-byte GCM nonce for every application-data record. Because wcAriaEncrypt is stateless and passes the caller-supplied IV verbatim to the MagicCrypto SDK with no internal counter, and because the explicit IV is...

CVE-2026-5187 Heap Out-of-Bounds Write in DecodeObjectId() in wolfSSL

Two potential heap out-of-bounds write locations existed in DecodeObjectId in wolfcrypt/src/asn.c. First, a bounds check only validates one available slot before writing two OID arc values out0 and out1, enabling a 2-byte out-of-bounds write when outSz equals 1. Second, multiple callers pass...

CVE-2026-5187 Heap Out-of-Bounds Write in DecodeObjectId() in wolfSSL

Two potential heap out-of-bounds write locations existed in DecodeObjectId in wolfcrypt/src/asn.c. First, a bounds check only validates one available slot before writing two OID arc values out0 and out1, enabling a 2-byte out-of-bounds write when outSz equals 1. Second, multiple callers pass...

CVE-2026-5187

CVE-2026-5187 affects wolfSSL’s wolfcrypt DecodeObjectId() in asn.c, with two potential heap out-of-bounds writes. First, a bounds check validates only one slot before writing two OID arcs (out[0], out[1]), allowing a 2-byte OOB write when outSz == 1. Second, callers pass sizeof(decOid) (64 bytes...

CVE-2026-5194 wolfSSL ECDSA Certificate Verification

Missing hash/digest size and OID checks allow digests smaller than allowed when verifying ECDSA certificates, or smaller than is appropriate for the relevant key type, to be accepted by signature verification functions. This could lead to reduced security of ECDSA certificate-based authentication...

CVE-2026-5194 wolfSSL ECDSA Certificate Verification

Missing hash/digest size and OID checks allow digests smaller than allowed when verifying ECDSA certificates, or smaller than is appropriate for the relevant key type, to be accepted by signature verification functions. This could lead to reduced security of ECDSA certificate-based authentication...

CVE-2026-5194 wolfSSL ECDSA Certificate Verification

Missing hash/digest size and OID checks allow digests smaller than allowed when verifying ECDSA certificates, or smaller than is appropriate for the relevant key type, to be accepted by signature verification functions. This could lead to reduced security of ECDSA certificate-based authentication...

CVE-2026-5194

The CVE-2026-5194 issue concerns wolfSSL’s ECDSA certificate verification: missing hash/digest size and OID checks may allow digests smaller than allowed for the given key type to pass verification when EdDSA or ML-DSA is enabled. This could reduce security of ECDSA certificate-based authenticati...

wolfSSL 安全漏洞

wolfSSL CyaSSL is a small, portable embedded SSL programming library developed by the American company wolfSSL, aimed at developers working with embedded systems. Versions of wolfSSL prior to 5.9.0 contained a security vulnerability caused by integer underflow. This vulnerability could allow...

PT-2026-31827

Name of the Vulnerable Software and Affected Versions wolfSSL affected versions not specified Description A buffer overflow may occur when parsing date fields from a crafted X.509 certificate via the compatibility layer API. This issue is triggered when directly calling the wolfSSL X509 notAfter...

CVE-2026-5295: Stack-based Buffer Overflow

A stack buffer overflow exists in wolfSSL's PKCS7 implementation in the wcPKCS7DecryptOri function in wolfcrypt/src/pkcs7.c. When processing a CMS EnvelopedData message containing an OtherRecipientInfo ORI recipient, the function copies an ASN.1-parsed OID into a fixed 32-byte stack buffer...

CVE-2026-5263: Improper Certificate Validation

URI nameConstraints from constrained intermediate CAs are parsed but not enforced during certificate chain verification in wolfcrypt/src/asn.c. A compromised or malicious sub-CA could issue leaf certificates with URI SAN entries that violate the nameConstraints of the issuing CA, and wolfSSL woul...

CVE-2026-5503: Out-of-bounds Write

In TLSXEchChangeSNI, the ctx-extensions branch set extensions unconditionally even when TLSXFind returned NULL. This caused TLSXUseSNI to attach the attacker-controlled publicName to the shared WOLFSSLCTX when no inner SNI was configured. TLSXEchRestoreSNI then failed to clean it up because its...

CVE-2026-5504: Improper Validation of Integrity Check Value

A padding oracle exists in wolfSSL's PKCS7 CBC decryption that could allow an attacker to recover plaintext through repeated decryption queries with modified ciphertext. In previous versions of wolfSSL the interior padding bytes are not validated...

wolfSSL 安全漏洞

wolfSSL CyaSSL is a small, portable embedded SSL programming library developed by the American company wolfSSL, aimed at developers working with embedded systems. There is a security vulnerability in wolfSSL, which stems from a heap buffer overflow issue in the processing of DTLS 1.3 ACK messages...

wolfSSL 安全漏洞

wolfSSL CyaSSL is a small, portable embedded SSL programming library developed by the American company wolfSSL, designed for developers working with embedded systems. There is a security vulnerability in wolfSSL, which stems from an excessive read of the 1-byte stack buffer in the MatchDomainName...

wolfSSL 安全漏洞

wolfSSL CyaSSL is a small, portable embedded SSL programming library developed by the US company wolfSSL, designed for developers working with embedded systems. There is a security vulnerability in wolfSSL, which stems from the PKCS7 implementation in the wcPKCS7DecryptOri function. This...

wolfSSL（CyaSSL） 安全漏洞

wolfSSL CyaSSL is a small, portable embedded SSL programming library developed by the American company wolfSSL, aimed at developers working with embedded systems. wolfSSL CyaSSL contains security vulnerabilities; these vulnerabilities stem from the parsing of URI names during certificate chain...

wolfSSL（CyaSSL） 安全漏洞

WolfSSL CyaSSL is a small, portable embedded SSL programming library developed by the American company wolfSSL, designed for developers working with embedded systems. WolfSSL CyaSSL has security vulnerabilities; these vulnerabilities stem from two potential stack overflow points in the...