CVE-2026-6678

MEDIUM

Integer underflow in wc_PKCS7_DecryptOri handling crafted Other Recipient Info

Title source: cna
STIX 2.1

Description

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

References (3)

Core 3

Scores

CVSS v3 5.3
EPSS 0.0019
EPSS Percentile 8.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-191
Status published
Products (2)
wolfSSL/wolfSSL 3.15.5 - 5.9.1
wolfssl/wolfssl 3.15.5 - 5.9.2
Published Jun 25, 2026
Tracked Since Jun 26, 2026