Exploited vulnerability

CVE-2026-76519

TLP:CLEAR

Cisco Secure Email Gateway Relative Path Traversal Vulnerability

Cisco Secure Email Gateway contains a relative path traversal vulnerability that could allow an unauthenticated, remote attacker to write arbitrary files on the underlying operating system.

Facts

Vendor: Cisco
Product: Secure Email Gateway
CVSS: 9.8
EPSS (probability of exploitation within 30 days): 2.2 %
On CISA's Known Exploited Vulnerabilities list since: 14 October 2026
First known exploitation: 14 October 2026
CISA's deadline for US federal agencies: 17 October 2026
Weakness: CWE-23
First seen by Risk Letters: 14 October 2026

Members see which Nordic sectors the flaw hits, and what to do about it.

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD