Interlock ransomware targeting of max severity Cisco FMC zero-day precedes disclosure
Overview
The Interlock ransomware group has been exploiting a severe zero-day vulnerability in Cisco Secure Firewall Management Center software, identified as CVE-2026-20131, since January 26, prior to its public disclosure. This vulnerability allows for insecure deserialization, which can lead to unauthorized access and potential takeover of affected systems. Organizations using Cisco's Secure Firewall Management Center should be particularly vigilant, as the attacks have been ongoing for over a month, posing a significant risk to network security. The situation emphasizes the urgent need for timely security updates and monitoring to protect against such exploitation.
Key Takeaways
- Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
- Affected Systems: Cisco Secure Firewall Management Center software, specifically affected versions that are vulnerable to CVE-2026-20131.
- Action Required: Organizations should apply any available security patches from Cisco for the affected software.
- Timeline: Ongoing since January 26, 2023
Original Article Summary
Attacks exploiting the maximum severity insecure deserialization zero-day vulnerability in Cisco Secure Firewall Management Center software, tracked as CVE-2026-20131, have been launched by the Interlock ransomware gang since Jan. 26, or over a month before the flaw's public disclosure, The Hacker News reports.
Impact
Cisco Secure Firewall Management Center software, specifically affected versions that are vulnerable to CVE-2026-20131.
Exploitation Status
This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.
Timeline
Ongoing since January 26, 2023
Remediation
Organizations should apply any available security patches from Cisco for the affected software. They should also review their configurations and consider implementing additional security measures to mitigate the risk of exploitation.
Additional Information
This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.
Related Topics: This incident relates to Ransomware, CVE, Zero-day, and 2 more.