CVE-2026-76519 KEV
9.8
CRITICAL · CVSS 3.1
Patch first
On CISA KEV — known exploited in the wild, due 2026-10-17.
Description
A vulnerability in the Advanced Malware Protection (AMP) feature of Cisco Secure Email Gateway could allow an unauthenticated, remote attacker to write arbitrary files on the underlying operating system. This vulnerability is due to improper handling of email attachments when the file reputation service is enabled. An attacker could exploit this vulnerability by sending an email that contains a crafted attachment through an affected device. A successful exploit could allow the attacker to write arbitrary files and execute commands with root privileges on the underlying operating system.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | — |
| Weakness | CWE-23 |
| On CISA KEV | yes — remediate by 2026-10-17 |
| Public exploit | none known |
| Published | 2026-10-14 |
| Last modified | 2026-10-15 |
CISA KEV
| Name | Cisco Secure Email Gateway Relative Path Traversal Vulnerability |
|---|---|
| Added | 2026-10-14 |
| Due | 2026-10-17 |
| Vendor / product | Cisco / Secure Email Gateway |
| Ransomware use | none reported |
Affected (7)
| Vendor | Product |
|---|---|
| cisco | asyncos |
| cisco | secure email gateway c195 |
| cisco | secure email gateway c395 |
| cisco | secure email gateway c695 |
| cisco | secure email gateway virtual appliance c100v |
| cisco | secure email gateway virtual appliance c300v |
| cisco | secure email gateway virtual appliance c600v |
References
→ the Explorer · watch your stack · NVD