Summary
generated automatically from NVD dataCisco Secure Email Gateway (AsyncOS) has a flaw in its Advanced Malware Protection (AMP) feature, tied to a path traversal weakness (CWE-23). When the file reputation service is enabled, improper handling of email attachments lets an unauthenticated remote attacker write arbitrary files on the underlying operating system and run commands as root, simply by sending a crafted attachment through an affected device. The flaw is rated CRITICAL with a CVSS v3.1 score of 9.8 and is listed in the CISA KEV catalog, meaning it is actively exploited.
NVD 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.
⚠️ Actively exploited — CISA KEV
This CVE was added to CISA's Known Exploited Vulnerabilities catalog on 2026-10-14. It is confirmed exploited in the wild and must be patched as a priority.
Remediation deadline (US federal agencies): 2026-10-17
EPSS · FIRST.org
1.6%probability of exploitation in the next 30 days
Higher than 75% of scored CVEs
EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-19, recomputed daily by FIRST.org.
In-depth analysis on cveo.tech
We've published a detailed analysis of this CVE — exploitation, IOCs and mitigation.
CVSS v3.1 Score
Information
- Published
- 14 oct. 2026
- Updated
- 15 oct. 2026
- Status
- Analyzed
- Source
- psirt@cisco.com
Affected products
Weaknesses (CWE)
References (2)
Similar CVEs
Other vulnerabilities of type CWE-23
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