CVE Explorer
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 send
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","modules":["wolfcrypt ECC"],"platforms":["Linux"],"product":"wolfssl","programFiles":["wolfcrypt/src/ecc.c"],"programRoutines":[{"name":"wc_ecc_import_x963_ex"}],"repo":"https://github.com/wolfSSL/wolfssl","vendor":"wolfSSL","versions":[{"lessThanOrEqual":"5.8.4","status":"affected","version":"0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:031bedaa1fcdc78c4c9b8734b48c6d9a60641e64c7bd0e0c457e7135118068ef · sha256:2644afbb8834506f… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"Automatable":"YES","Recovery":"USER","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":1.3,"baseSeverity":"LOW","exploitMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"NONE","providerUrgency":"AMBER","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","valueDensity":"DIFFUSE","vectorString":"CVSS: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","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidenti…
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:031bedaa1fcdc78c4c9b8734b48c6d9a60641e64c7bd0e0c457e7135118068ef · sha256:2644afbb8834506f… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-122","description":"CWE-122 Heap-based Buffer Overflow","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:031bedaa1fcdc78c4c9b8734b48c6d9a60641e64c7bd0e0c457e7135118068ef · sha256:2644afbb8834506f… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"tags":["patch"],"url":"https://github.com/wolfSSL/wolfssl/pull/9988"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:031bedaa1fcdc78c4c9b8734b48c6d9a60641e64c7bd0e0c457e7135118068ef · sha256:2644afbb8834506f… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.