CVE-2026-6678

EUVD-2026-39558
Integer underflow in wc_PKCS7_DecryptOri when handling crafted Other Recipient Info, leading to incorrect length handling during decryption.
Wrap or Wraparound
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
wolfSSLCNA
1 LOW
LOCAL
HIGH
LOW
CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/U:Clear
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
wolfsslwolfssl
3.15.5 ≤
𝑥
≤ 5.9.1
CNA
Common Weakness Enumeration
References
https://github.com/wolfSSL/wolfssl/pull/10203
https://www.wolfssl.com/docs/security-vulnerabilities/