CVE-2026-6678 Details
Description
Integer underflow in wc_PKCS7_DecryptOri when handling crafted Other Recipient Info, leading to incorrect length handling during decryption.
An integer underflow vulnerability has been identified in wolfSSL's PKCS7 decryption process, specifically in the function wc_PKCS7_DecryptOri. This vulnerability arises when the software processes crafted Other Recipient Info, leading to improper length management during decryption. As a result, an attacker could potentially exploit this flaw to manipulate decryption outcomes.
Users are advised to update to wolfSSL version 5.9.1, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 26, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.talosintelligence.com/vulnerability_reports/TALOS-2026-2408 | CVE | |
| https://github.com/wolfSSL/wolfssl/pull/10203 | [email protected] | Issue TrackingPatch |
| https://www.wolfssl.com/docs/security-vulnerabilities/ | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-191 | Integer Underflow (Wrap or Wraparound) | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| wolfssl wolfssl | >= 3.15.5, < 5.9.2 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 1, 2026 | CVE Modified | CVE |
| Jun 27, 2026 | Initial Analysis | [email protected] |
| Jun 26, 2026 | CVE Modified | CISA-ADP |
| Jun 25, 2026 | New CVE Received | [email protected] |