October 30, 2026

CVE Watchtower

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CVE-2026-76443NVD

Vulnerability Summary

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.
Severity Level
CRITICAL(9.8)
Published Date
Sep 14, 2026
Last Modified
Sep 15, 2026
PoC
Available(Metasploit)
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.53%Probability
Root Weakness (CWE)
CWE-707: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v3.1 Base Metrics — Score 9.8 (CRITICAL)
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Cisco Cisco Secure Email >= 14.0.0-698
  • Cisco Cisco Secure Email >= 13.5.1-277
  • Cisco Cisco Secure Email >= 13.0.0-392
  • Cisco Cisco Secure Email >= 14.2.0-620
  • Cisco Cisco Secure Email >= 13.0.5-007
  • Cisco Cisco Secure Email >= 13.5.4-038
  • Cisco Cisco Secure Email >= 14.2.1-020
  • Cisco Cisco Secure Email >= 14.3.0-032
  • Cisco Cisco Secure Email >= 15.0.0-104
  • Cisco Cisco Secure Email >= 15.0.1-030
  • Cisco Cisco Secure Email >= 15.5.0-048
  • Cisco Cisco Secure Email >= 15.5.1-055
  • Cisco Cisco Secure Email >= 15.5.2-018
  • Cisco Cisco Secure Email >= 16.0.0-050
  • Cisco Cisco Secure Email >= 15.0.3-002
  • Cisco Cisco Secure Email >= 16.0.0-054
  • Cisco Cisco Secure Email >= 15.5.3-022
  • Cisco Cisco Secure Email >= 16.0.1-017
  • Cisco Cisco Secure Email >= 15.5.4-012
  • Cisco Cisco Secure Email >= 16.0.4-016
  • Cisco Cisco Secure Email >= 15.0.5-016
  • Cisco Cisco Secure Email >= 16.0.2-112
  • Cisco Cisco Secure Email >= 16.0.3-044
  • Cisco Cisco Secure Email and Web Manager >= 13.6.2-023
  • Cisco Cisco Secure Email and Web Manager >= 13.6.2-078
  • Cisco Cisco Secure Email and Web Manager >= 13.0.0-249
  • Cisco Cisco Secure Email and Web Manager >= 13.0.0-277
  • Cisco Cisco Secure Email and Web Manager >= 13.8.1-052
  • Cisco Cisco Secure Email and Web Manager >= 13.8.1-068
  • Cisco Cisco Secure Email and Web Manager >= 13.8.1-074
  • Cisco Cisco Secure Email and Web Manager >= 14.0.0-404
  • Cisco Cisco Secure Email and Web Manager >= 12.8.1-002
  • Cisco Cisco Secure Email and Web Manager >= 14.1.0-227
  • Cisco Cisco Secure Email and Web Manager >= 13.6.1-201
  • Cisco Cisco Secure Email and Web Manager >= 14.2.0-203
  • Cisco Cisco Secure Email and Web Manager >= 14.2.0-212
  • Cisco Cisco Secure Email and Web Manager >= 12.8.1-021
  • Cisco Cisco Secure Email and Web Manager >= 13.8.1-108
  • Cisco Cisco Secure Email and Web Manager >= 14.2.0-224
  • Cisco Cisco Secure Email and Web Manager >= 14.3.0-120
  • Cisco Cisco Secure Email and Web Manager >= 15.0.0-334
  • Cisco Cisco Secure Email and Web Manager >= 15.5.1-024
  • Cisco Cisco Secure Email and Web Manager >= 15.5.1-029
  • Cisco Cisco Secure Email and Web Manager >= 15.5.2-005
  • Cisco Cisco Secure Email and Web Manager >= 16.0.0-195
  • Cisco Cisco Secure Email and Web Manager >= 15.5.3-017
  • Cisco Cisco Secure Email and Web Manager >= 16.0.1-010
  • Cisco Cisco Secure Email and Web Manager >= 15.0.1-035
  • Cisco Cisco Secure Email and Web Manager >= 16.0.2-088
  • Cisco Cisco Secure Email and Web Manager >= 15.5.4-007
  • Cisco Cisco Secure Email and Web Manager >= 15.0.2-007
  • Cisco Cisco Secure Email and Web Manager >= 16.0.4-010
  • Cisco Cisco Secure Email and Web Manager >= 16.0.3-016
Patched Versions
Not provided by cveorg for this CVE.
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🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.
🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References