CVE-2026-76443

Cisco Secure Email Gateway Security Hardening Release

At a glance

Severity: CRITICAL 9.8
EPSS: EPSS 0.53 % · percentile 45 (2026-10-27)
State: PUBLISHED
Published: 2026-09-14
Updated: 2026-09-15
Assigner: cisco
NVD status: Awaiting Analysis

Description

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-2026-76443 are related to issues with improper neutralization that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-707.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	cisco
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · psirt@cisco.com (Secondary)

Weaknesses (CWE)

CWE-707

European references

ENISA EUVD · EUVD-2026-77623
GCVE · GCVE-0-2026-76443

CERT-FR advisories

CERTFR-2026-AVI-1175 — Multiples vulnérabilités dans les produits Cisco · cert.ssi.gouv.fr

Affected products

Product	Versions
Cisco · Cisco Secure Email	affected 14.0.0-698 ; affected 13.5.1-277 ; affected 13.0.0-392 ; affected 14.2.0-620 ; affected 13.0.5-007 ; affected 13.5.4-038
Cisco · Cisco Secure Email and Web Manager	affected 13.6.2-023 ; affected 13.6.2-078 ; affected 13.0.0-249 ; affected 13.0.0-277 ; affected 13.8.1-052 ; affected 13.8.1-068

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD