What is CVE-2026-76442?

CVE-2026-76442 is a high-severity vulnerability in Cisco Secure Email, classified under Improper Validation of Specified Quantity in Input. CVSS score: 7.5/10. Published 2026-09-14.

How severe is CVE-2026-76442?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Cisco Secure Email

CVE-2026-76442

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Email Gateway and Cisco Secure Email and Web Manager engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76442 are related to issues with improper validation of specified quantity in input that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-1284.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Cisco Secure Email — versions 13.0.0-392, 13.0.5-007, 13.5.1-277
Cisco Secure Email And Web Manager — versions 12.8.1-002, 12.8.1-021, 13.0.0-249

Weakness classification (CWE)

CWE-1284 — Improper Validation of Specified Quantity in Input

References

Frequently asked questions

What is CVE-2026-76442?: CVE-2026-76442 is a high-severity vulnerability in Cisco Secure Email, classified under Improper Validation of Specified Quantity in Input. CVSS score: 7.5/10. Published 2026-09-14.
How severe is CVE-2026-76442?: High severity. CVSS v3 base score is 7.5 out of 10.