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.
Cisco Secure Email Gateway Arbitrary File Write Vulnerability
About this summary. This is a short, independently written summary of an article first published by Cisco PSIRT. Cyber Security News did not report or verify the underlying story. Read the original: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-afw-zqYJkjxp?vs_f=Cisco%20Security%20Advisory%26vs_cat%3DSecurity%20Intelligence%26vs_type%3DRSS%26vs_p%3DCisco%20Secure%20Email%20Gateway%20Arbitrary%20File%20Write%20Vulnerability%26vs_k%3D1
Source attribution: headline and facts are from Cisco PSIRT (sec.cloudapps.cisco.com). Summary method: excerpt of the source description. See our source attribution policy.
Related coverage
Cisco Secure Email & PAN-OS Zero-Days Exploited
Cisco Secure Email & PAN-OS Zero-Days Exploited Cisco and Palo Alto Networks have patched two actively exploited zero-day vulnerabilities that can lead to root-level…
Cisco Urges Customers to Patch Email Gateway Flaw and Check for Compromise
Attackers exploit a critical Cisco email gateway flaw to gain root access. Cisco urges customers to update scanner tools and check for compromise. Cisco confirmed this…
U.S. CISA adds Palo Alto Networks PAN-OS, Ahsay AhsayCBS, and Cisco Secure Email Gateway flaws to its Known Exploited Vulnerabilities catalog
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Palo Alto Networks PAN-OS, Ahsay AhsayCBS, and Cisco Secure Email Gateway flaws to its Known Exploited…
CISA Warns of Cisco Secure Email Gateway Arbitrary File Write Vulnerability (CVE-2026-76519)
Cisco released a security advisory for a critical-severity vulnerability in the Cisco Secure Email Gateway. Tracked as CVE-2026-76519, the vulnerability may allow an…
CISA flags exploited flaws in Palo Alto, Cisco and Ahsay products
The US Cybersecurity and Infrastructure Security Agency (CISA) has added four new vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog: CVE-2026-0322, a…
Cisco security advisory (AV26-1042)
Serial number: AV26-1042 Date: October 14, 2026 As of October 14, 2026, Cisco is affected by a vulnerability in the following products: Cisco AsyncOS Software for Cisco…