critical
CVE-2026-4395
Heap-based buffer overflow in the KCAPI ECC code path of wc_ecc_import ...
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Julia1.3CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/AU:Y/R:U/V:D/RE:L/U:Amber
Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Julia (low).
Description
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.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| alpine 3.23 | wolfssl | 5.9.1-r0 |
| alpine 3.24 | wolfssl | 5.9.0-r0 |
| alpine edge | wolfssl | 5.9.0-r0 |
| debian 11 | wolfssl | no fix listed |
| debian 12 | wolfssl | no fix listed |
| debian 13 | wolfssl | no fix listed |
| echo | wolfssl | no fix listed |
| julia::Julia Ecosystem Security Advisories | wolfSSL_jll | 5.9.2+0 |
| rapidfort alpine 3.20 | wolfssl | 5.9.0-r0 |
| rapidfort alpine 3.21 | wolfssl | 5.9.0-r0 |
| rapidfort alpine 3.22 | wolfssl | 5.9.0-r0 |
| rapidfort debian 12 | wolfssl | 0:5.9.0-0.1 |
Show all 13 entries from 13 sources
| Source | Package | Fixed in |
|---|---|---|
| alpine 3.23 | wolfssl | 5.9.1-r0 |
| alpine 3.24 | wolfssl | 5.9.0-r0 |
| alpine edge | wolfssl | 5.9.0-r0 |
| debian 11 | wolfssl | no fix listed |
| debian 12 | wolfssl | no fix listed |
| debian 13 | wolfssl | no fix listed |
| echo | wolfssl | no fix listed |
| julia::Julia Ecosystem Security Advisories | wolfSSL_jll | 5.9.2+0 |
| rapidfort alpine 3.20 | wolfssl | 5.9.0-r0 |
| rapidfort alpine 3.21 | wolfssl | 5.9.0-r0 |
| rapidfort alpine 3.22 | wolfssl | 5.9.0-r0 |
| rapidfort debian 12 | wolfssl | 0:5.9.0-0.1 |
| rapidfort debian 13 | wolfssl | 0:5.9.0-0.1 |