The vulnerabilities of Cisco Secure Email and Web Manager, as well as Cisco Secure Email Gateway, are related to insufficient resource control during their existence. This allows attackers to trigger service failures.
🗓️ 23 Sep 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 3 Views
| Reporter | Title | Published | Views | Family All 9 |
|---|---|---|---|---|
 | CVE-2026-20353 | 14 Sep 202616:42 | – | circl |
 | Cisco Secure Email Gateway and Secure Email and Web Manager Security Hardening Release: September 2026 | 14 Sep 202616:00 | – | cisco |
 | CVE-2026-20353 | 14 Sep 202616:08 | – | cve |
 | CVE-2026-20353 Cisco Secure Email Gateway Security Hardening Release | 14 Sep 202616:08 | – | cvelist |
 | EUVD-2026-77621 | 14 Sep 202616:08 | – | euvd |
 | CVE-2026-20353 | 14 Sep 202617:17 | – | nvd |
 | PT-2026-91264 | 14 Sep 202600:00 | – | ptsecurity |
 | CVE-2026-20353: Improper Control of a Resource Through its Lifetime | 14 Sep 202600:00 | – | rapid7 |
 | CVE-2026-20353 Cisco Secure Email Gateway Security Hardening Release | 14 Sep 202616:08 | – | vulnrichment |
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23 Sep 2026 00:00Current
6.1Medium risk
Vulners AI Score6.1
CVSS 39.8
CVSS 210
EPSS0.00396