Cisco Secure Email Gateway: Schwachstelle ermöglicht Ausführen von beliebigem Programmcode mit Administratorrechten
WID-SEC-2026-3963 · first 15.10.2026 · updated 15.10.2026 · CVSS 9,8
What it is about
Das Cisco Secure Email Gateway ist eine Sicherheitslösung zum Schutz der E-Mail Kommunikation. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Cisco Secure Email Gateway ausnutzen, um beliebigen Programmcode mit Administratorrechten auszuführen.
Under what conditions?
Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.
What can happen in the worst case
An attacker could use the vulnerability to
- beliebigen Programmcode mit Administratorrechten auszuführen
Am I affected?
Affected according to the BSI:
- Cisco Secure Email Gateway <15.5.5-014
- Cisco Secure Email Gateway <16.5.0-780
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Cisco Secure Email Gateway 15.5.5-014
- Cisco Secure Email Gateway 16.5.0-780
Is the vulnerability already being exploited?
- CVE-2026-76519: exploited in the wild according to CISA, in the catalogue since 14.10.2026.
Information and sources
- Original BSI advisory (WID)
- Cisco Security Advisory cisco-sa-esa-afw-zqYJkjxp vom 2026-10-14 sec.cloudapps.cisco.com
- CISA Known Exploited Vulnerabilities Catalog vom 2026-10-14 www.cisa.gov
CVE: CVE-2026-76519
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.