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CVE-2026-76519— Cisco Secure Email Gateway Arbitrary File Write Vulnerability

Quick assessment

Affected
Cisco Cisco Secure Email
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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

CVSS 9.8 · Critical

Affected Version Matrix 23

VendorProduct Version RangeStatus
Cisco Cisco Secure Email 14.0.0-698 affected
13.5.1-277 affected
13.0.0-392 affected
14.2.0-620 affected
13.0.5-007 affected
13.5.4-038 affected
14.2.1-020 affected
14.3.0-032 affected
… +15 more rows
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I. Basic Information for CVE-2026-76519

Vulnerability Information

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Vulnerability Title
Cisco Secure Email Gateway Arbitrary File Write Vulnerability
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
相对路径遍历
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco Secure Email 14.0.0-698 -

II. Public POCs for CVE-2026-76519

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III. Intelligence Information for CVE-2026-76519

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Vendor Advisories for CVE-2026-76519 (1)

IV. Related Vulnerabilities

Same product: Cisco Secure Email
Same vendor: Cisco
Same weakness: CWE-23

V. Comments for CVE-2026-76519

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