Vulnerability Report

CVE-2026-76519

CISA KEV Active

Title: CVE-2026-76519

Arbitrary File Access

Proof Of Concept

PoC Available for CVE-2026-76519

CWE Category CWE-23
Published Date Oct 14, 2026
Modified Date Oct 15, 2026
Exploit Status Available
Score 9.8 CVSS v3.1
Exploit Probability (EPSS)
2.15%

Vulnerability Summary

CVE-2026-76519: 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.

Impacted Vendors

C
cisco 6

Reference Links

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-afw-zqYJkjxp
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
9.8
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-76519 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/Mickysalivan/CVE-2026-76519-POC
View Code
GitHub https://github.com/Mickysalivan/CVE-2026-76519-Proof-of-concept
View Code
MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.