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Cisco Secure Email Secure/Multipurpose Internet Mail Extensions Ciphertext Decryption Vulnerabilities

CVEs

CVECVSSCWEExploitation
CVE-2026-20354 5.9 CWE-345 Not observed in the wild
CVE-2026-20355 5.9 CWE-345 Not observed in the wild

Affected Products

ProductAffected versionsFixed version
Cisco Secure Email 13.0.0-392 Not specified by vendor Not specified by vendor
Cisco Secure Email 13.0.5-007 Not specified by vendor Not specified by vendor
Cisco Secure Email 13.5.1-277 Not specified by vendor Not specified by vendor
Cisco Secure Email 13.5.4-038 Not specified by vendor Not specified by vendor
Cisco Secure Email 14.0.0-698 Not specified by vendor Not specified by vendor
Cisco Secure Email 14.2.0-620 Not specified by vendor Not specified by vendor
Cisco Secure Email 14.2.1-020 Not specified by vendor Not specified by vendor
Cisco Secure Email 14.3.0-032 Not specified by vendor Not specified by vendor
Cisco Secure Email 15.0.0-104 Not specified by vendor Not specified by vendor
Cisco Secure Email 15.0.1-030 Not specified by vendor Not specified by vendor
Cisco Secure Email 15.0.3-002 Not specified by vendor Not specified by vendor
Cisco Secure Email 15.0.5-016 Not specified by vendor Not specified by vendor
Cisco Secure Email 15.5.0-048 Not specified by vendor Not specified by vendor
Cisco Secure Email 15.5.1-055 Not specified by vendor Not specified by vendor
Cisco Secure Email 15.5.2-018 Not specified by vendor Not specified by vendor
Cisco Secure Email 15.5.3-022 Not specified by vendor Not specified by vendor
Cisco Secure Email 15.5.4-012 Not specified by vendor Not specified by vendor
Cisco Secure Email 16.0.0-050 Not specified by vendor Not specified by vendor
Cisco Secure Email 16.0.0-054 Not specified by vendor Not specified by vendor
Cisco Secure Email 16.0.1-017 Not specified by vendor Not specified by vendor
Cisco Secure Email 16.0.2-112 Not specified by vendor Not specified by vendor
Cisco Secure Email 16.0.3-044 Not specified by vendor Not specified by vendor
Cisco Secure Email 16.0.4-016 Not specified by vendor Not specified by vendor
Cisco Secure Email 16.5.0-780 Not specified by vendor Not specified by vendor