Your webmail is a silent doorway for state-sponsored espionage. 📧
CVE-2025-49113 · Severity 9.9 · Critical Remote Code Execution in Roundcube Webmail.
We are seeing attackers leverage this deserialization flaw to take full control of affected systems. This vulnerability was added to the @[CISA](urn:li:organization:13010360) KEV catalog in the last 24 hours due to active exploitation by advanced threat groups.
Attackers are targeting unpatched webmail servers to steal login credentials and spy on sensitive communications. With over 53 million hosts potentially impacted, the window for remediation is closing rapidly.
The uncomfortable truth: Your webmail is the most direct path for an attacker to compromise your corporate identity and internal communications.
→ Patch Roundcube Webmail to version 1.6.11 or 1.5.10 LTS immediately.
→ Audit your mail server logs for unauthorized PHP object deserialization attempts.
→ Force a password reset for all users if your server was exposed and unpatched.
Have you confirmed that your webmail infrastructure is running the latest security patches? 👇
#Cybersecurity #EmailSecurity #ZeroTrust #VulnerabilityManagement #CISO #CodeDefence