CVE-2026-4395

Heap-based buffer overflow in the KCAPI ECC code path of wc_ecc_import_x963_ex() in wolfSSL wolfcrypt allows a remote attacker to write attacker-controlled data past the bounds of the pubkey_raw buffer via a crafted oversized EC public key point. The WOLFSSL_KCAPI_ECC code path copies the input to key->pubkey_raw (132 bytes) using XMEMCPY without a bounds check, unlike the ATECC code path which includes a length validation. This can be triggered during TLS key exchange when a malicious peer sends a crafted ECPoint in ServerKeyExchange.

CVSS

No CVSS.

References

Link	Resource
https://github.com/wolfSSL/wolfssl/pull/9988

Configurations

No configuration.

History

19 Mar 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-19 21:17

Updated : 2026-03-19 21:17

NVD link : CVE-2026-4395

Mitre link : CVE-2026-4395

CVE.ORG link : CVE-2026-4395

JSON object : View

Products Affected

No product.

CWE

CWE-122

Heap-based Buffer Overflow

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