Claude Mythos AI Finds 10,000 High-Severity Flaws in Widely Used Software

Anthropic on Friday disclosed that Project Glasswing has helped uncover more than 10,000 high- or critical-severity vulnerabilities across some of the most "systemically" important software across the world since the cybersecurity initiative went live last month. Project Glasswing is a defensive...

ANT-2026-6615Y595 · wolfSSL · Heap Buffer Overflow

heap-buffer-overflow medium CVE-2026-5448 Severity Claude medium · Security research firm medium · Maintainer - REPORT Anthropic's analysis, sealed at approval. Disclosure to the maintainer was performed by Calif. ANT-2026-6615Y595: Final Assessment: 2-Byte Heap Overflow in wolfSSLX509notAfter /...

CVE-2026-5500

wolfSSL's wcPKCS7DecodeAuthEnvelopedData does not properly sanitize the AES-GCM authentication tag length received and has no lower bounds check. A man-in-the-middle can therefore truncate the mac field from 16 bytes to 1 byte, reducing the tag check from 2⁻¹²⁸ to 2⁻⁸...

EUVD-2026-21235

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...

PT-2026-31861

Name of the Vulnerable Software and Affected Versions wolfSSL affected versions not specified Description An integer underflow issue exists in wolfSSL when parsing the Subject Alternative Name SAN extension of X.509 certificates. A malformed certificate can specify an entry length larger than the...

PT-2026-31864

Name of the Vulnerable Software and Affected Versions wolfSSL affected versions not specified Description wolfSSL's wc PKCS7 DecodeAuthEnvelopedData function does not properly sanitize the AES-GCM authentication tag length received and lacks a lower bounds check. This allows a man-in-the-middle...

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. wolfSSL has a security vulnerability that stems from an integer underflow issue during the parsing of X.509 certificates, which may le...

CVE-2026-5393

Dual-Algorithm CertificateVerify out-of-bounds read. When processing a dual-algorithm CertificateVerify message, an out-of-bounds read can occur on crafted input. This can only occur when --enable-experimental and --enable-dual-alg-certs is used when building wolfSSL...

CVE-2026-5460

A heap use-after-free exists in wolfSSL's TLS 1.3 post-quantum cryptography PQC hybrid KeyShare processing. In the error handling path of TLSXKeyShareProcessPqcHybridClient in src/tls.c, the inner function TLSXKeyShareProcessPqcClientex frees a KyberKey object upon encountering an error. The call...

CVE-2026-5393 OOB Read in DoTls13CertificateVerify with WOLFSSL_DUAL_ALG_CERTS

Dual-Algorithm CertificateVerify out-of-bounds read. When processing a dual-algorithm CertificateVerify message, an out-of-bounds read can occur on crafted input. This can only occur when --enable-experimental and --enable-dual-alg-certs is used when building wolfSSL...

UBUNTU-CVE-2026-5778

Integer underflow in wolfSSL packet sniffer = 5.9.0 allows an attacker to cause a program crash in the AEAD decryption path by injecting a TLS record shorter than the explicit IV plus authentication tag into traffic inspected by sslDecodePacket. The underflow wraps a 16-bit length to a large valu...

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

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

CVE-2026-5446 affects wolfSSL ARIA-GCM TLS 1.2/DTLS 1.2 sessions configured with --enable-aria and the proprietary MagicCrypto SDK. The issue is reuse of a 12-byte GCM nonce for every application-data record because wc_AriaEncrypt is stateless and passes the caller-provided IV directly, with the ...

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...

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. There is a security vulnerability in wolfSSL, which stems from the padding used in PKCS7 CBC decryption. This vulnerability could allo...

PT-2026-31817

Name of the Vulnerable Software and Affected Versions wolfSSL affected versions not specified Description 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. The interior padding...

ANT-2026-RSSMAMA7 · wolfSSL · crypto-failure

crypto-failure high CVE-2026-5479 Severity Claude high · Security research firm high · Maintainer - Discovered by Claude Mythos Preview SECURITY RESEARCH FIRM ANALYSIS Triage and disclosure were performed by Calif. Verdict: true positive Severity: high TIMELINE Dates from discovery through public...

ANT-2026-ZZY4987K · wolfSSL · integer-overflow

integer-overflow high CVE-2026-5477 Severity Claude high · Security research firm high · Maintainer - Discovered by Claude Mythos Preview SECURITY RESEARCH FIRM ANALYSIS Triage and disclosure were performed by Calif. Verdict: true positive Severity: high TIMELINE Dates from discovery through publ...

CVE-2026-4159

CVE-2026-4159: A 1-byte out-of-bounds heap read in wolfSSL’s wc_PKCS7_DecodeEnvelopedData can be triggered by a crafted CMS EnvelopedData message with zero-length encrypted content. Affected software: wolfSSL 5.8.4 and earlier; root cause is a 1-byte OOB read during enveloped data decoding. Impac...