CVE-2026-6678

Integer underflow in wc_PKCS7_DecryptOri handling crafted Other Recipient Info

State: Published
Severity: 1.0 Low
Published: Jun 25, 2026
Updated: Jul 1, 2026
Reserved: Apr 20, 2026

Description

Integer underflow in wc_PKCS7_DecryptOri when handling crafted Other Recipient Info, leading to incorrect length handling during decryption.

Scores

CVSS	Score	Vector	Source
4.0	1.0 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	wolfSSL

Weaknesses

CWE-191 Integer Underflow (Wrap or Wraparound)

Affected Products

Product	Versions
wolfSSLwolfSSL	3.15.5 through 5.9.1Affected

References

https://github.com/wolfSSL/wolfssl/pull/10203patch
https://www.wolfssl.com/docs/security-vulnerabilities/
https://www.talosintelligence.com/vulnerability_reports/TALOS-2026-2408

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