CVE-2026-5466
7.6
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Summary
wolfSSL's ECCSI signature verifier wc_VerifyEccsiHash decodes the r and s scalars from the signature blob via mp_read_unsigned_bin with no check that they lie in [1, q-1]. A crafted forged signature could verify against any message for any identity, using only publicly-known constants.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| wolfSSL | wolfSSL | 0 < 5.9.1 | affected |
Weaknesses
- CWE-347: CWE-347 Improper verification of cryptographic signature
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
References
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