Cisco Security Products Under Siege: China Exploits Zero-Day & VPNs Face Brute Force Tsunami
Cisco’s security products are caught in a whirlwind of cyber chaos. A critical Cisco zero-day vulnerability, CVE-2025-20393, is being exploited by China-linked APT UAT-9686. Meanwhile, a separate brute force attack swarms Cisco and Palo Alto VPNs. It’s a cyber circus! Remember, folks: always secure your Spam Quarantine feature and enforce strong passwords.

Hot Take:
In a plot twist worthy of a cyber-thriller, Cisco and Palo Alto Networks find themselves starring in a high-stakes game of “Whac-A-Mole” with cyber threats. While Cisco is busy dealing with an advanced persistent threat from China, it suddenly gets slapped with a brute force attack like a surprise pie in the face. Meanwhile, Palo Alto Networks is caught in the crossfire, facing its own whirlwind of attacks. It’s like the cybersecurity world’s version of a bad hair day—one problem solved, two more pop up!
Key Points:
– A China-linked group named UAT-9686 is exploiting a critical zero-day vulnerability in Cisco’s email security appliances.
– The vulnerability, CVE-2025-20393, is rated 10 out of 10 on the Common Vulnerability Scoring System, and remains unpatched.
– The attack uses the Spam Quarantine feature of Cisco’s AsyncOS software as the breach point.
– Simultaneously, a massive brute-force attack campaign targeted Cisco and Palo Alto Networks’ VPNs.
– The VPN attacks involve over 10,000 unique IPs, and were designed to quickly inventory weak systems.
