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2 vulnerabilities found for wolfEngine by wolfSSL Inc.
CVE-2026-81341 (GCVE-0-2026-81341)
Vulnerability from cvelistv5
Published
2026-08-28 14:43
Modified
2026-08-28 18:17
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-323 - Reusing a Nonce, Key Pair in Encryption
Summary
wolfEngine before 1.4.1 sources the explicit AES-CCM nonce for TLS 1.2 and DTLS 1.2 records from the record input buffer instead of the TLS sequence number carried in the additional authenticated data. Because the record layer leaves the explicit-nonce field for the cipher to populate, the value read is constant across records, so every AES-CCM record within a connection is encrypted under an identical key and nonce pair. Reusing a CCM key and nonce weakens confidentiality (identical keystream across records, so a known record recovers the others) and integrity (authentication tag forgery). Only wolfEngine is affected; wolfProvider is not. AES-GCM under wolfEngine is tracked separately. AES-CCM cipher suites are not enabled by default and must be explicitly selected, which limits exposure. TLS 1.3 and non-TLS use of the cipher are not affected.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| wolfSSL Inc. | wolfEngine |
Version: 0 |
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CVE-2026-81020 (GCVE-0-2026-81020)
Vulnerability from cvelistv5
Published
2026-08-28 14:42
Modified
2026-08-28 18:19
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-323 - Reusing a Nonce, Key Pair in Encryption
Summary
wolfEngine before 1.4.1 generates the 8-byte explicit AES-GCM nonce once when the TLS write key is set and never increments it per record. As a result every TLS 1.2 and DTLS 1.2 AES-GCM record within a connection is encrypted under an identical key and nonce pair. Reusing a GCM key and nonce discloses the keystream (the XOR of two ciphertexts equals the XOR of their plaintexts, so one known record recovers the others) and leaks the GHASH authentication key, enabling authentication tag forgery. AES-CCM, TLS 1.3, and non-TLS use of the cipher are not affected.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| wolfSSL Inc. | wolfEngine |
Version: 0 |
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