Cisco Secure Email Gateway unauthenticated remote command execution
Cisco Secure Email Gateway and Secure Email and Web Manager contain actively exploited unauthenticated remote command execution vulnerability CVE-2025-20393.
Sourceipa.go.jp — open the original
What to check
- Applies to
- The 1 CVE named below. Whether you run an affected version is not assessed: check the versions the source lists.
- Exploitation
- CISA lists CVE-2025-20393 as exploited in the wild.
Japan's Information-Technology Promotion Agency (IPA) has issued a security alert regarding CVE-2025-20393, an arbitrary command execution vulnerability affecting Cisco Secure Email Gateway and Secure Email and Web Manager. The vulnerability allows unauthenticated remote attackers to execute arbitrary commands with root privileges on affected appliances. Cisco Systems has confirmed active exploitation of this vulnerability in the wild, indicating threat actors are already leveraging this flaw in operational attacks. IPA warns that damage may expand and strongly urges organizations to apply available patches immediately following vendor-provided procedures. Cisco has released fixed versions to address the vulnerability, and administrators should prioritize upgrading affected systems to mitigate this critical risk.
Mentioned in this report
Source reporting: https://www.ipa.go.jp/security/security-alert/2025/alert20260119.html
Free public brief. Slack alerts on the vendors you run come with the paid plans, and a new account gets three days of them, no card.
What this brief leaves out
This page is the free tier: the write-up, the severity, the names. In the app the same report carries live profiles of the CVEs it names. The paid plans add the security research and news reporting the free tier leaves out.
It sits in a corpus of 16,433 reports from 149 sources, 661 of them written in the last seven days, and it grows through the day.
A new account starts with three days of all of it, no card, then keeps the government and CERT reporting free. Slack alerts are a paid-plan feature: name the vendors you run and Slack hears about the reports that touch them, not the rest of the week's. Nothing is charged unless you subscribe.
Create a free account What it costs