CVE-2026-76443 json
Cisco Secure Email Gateway Security Hardening Release
published 2026-09-14 56 d ago modified 2026-09-15 54 d ago also EUVD-2026-77623
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.4%
- EPSS 2.4% chance of exploitation in 30 days, percentile 83%
- public exploits
- 1
- Metasploit
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.
Timeline
- First public exploit (Metasploit exploit/unix/smtp/cisco_secure_email_gateway_smime_sqli_rce)
- Published
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 56 d ago
Exploit prediction
2.35% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Metasploit exploit/unix/smtp/cisco_secure_email_gateway_smime_sqli_rce Cisco Secure Email Gateway S/MIME SQL Injection RCE metasploit exploit, excellent rank, 2026-09-14
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Cisco Cisco Secure Email
- Cisco Cisco Secure Email and Web Manager
Classification
- Weakness
-
- CWE-707 Improper Neutralization
References
Sources
- CVE List CVE-2026-76443
- NVD CVE-2026-76443
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