Signal
Interlock ransomware exploited Cisco firewall zero-day weeks before patch
Evidence first: scan the strongest sources, then decide whether to go deeper.
Published 2026-03-19 08:57 UTCUpdated 2026-03-19 23:09 UTC
rss
cveexploitsransomwareincident_responsesecurity_advisory
Source links open
Source links and full evidence are open here. Archive history, compare-over-time, alerts, exports, API, integrations, and workflow are paid.
No card needed for the free brief.
Evidence trail (top sources)
top sources (4 domains)domains are deduped. counts indicate coverage, not truth.4 top sources shown
Overview
The Interlock ransomware group exploited a critical zero-day vulnerability (CVE-2026-20131) in Cisco Secure Firewall Management Center software starting January 26, weeks before Cisco publicly disclosed and patched the flaw on March 4.
Entities
CiscoAmazonAWSInterlock ransomware
Score total
1.47
Momentum 24h
5
Posts
5
Origins
5
Source types
1
Duplicate ratio
0%
Why now
- Interlock ransomware attacks began weeks before Cisco's patch release, showing active exploitation.
- Amazon's recent disclosure brings attention to ongoing risks in firewall security.
- The incident underscores the need for rapid vulnerability management in critical infrastructure.
Why it matters
- Zero-day exploitation of critical firewall software increases risk of widespread ransomware impact.
- Early detection by Amazon highlights importance of honeypots and threat intelligence in incident response.
- Timely patching of critical vulnerabilities is essential to mitigate active ransomware campaigns.
LLM analysis
Topic mix: lowPromo risk: lowSource quality: high
Recurring claims
- Interlock ransomware exploited Cisco firewall zero-day vulnerability CVE-2026-20131 weeks before patch release
How sources frame it
- CSO Online: neutral
All evidence
All evidence
Interlock ransomware targeting of max severity Cisco FMC zero-day precedes disclosure
SC Media · scworld.com · 2026-03-19 23:09 UTC
Ransomware group exploited Cisco firewall vulnerability as a zero day, weeks before a patch appeared
CSO Online · csoonline.com · 2026-03-19 18:25 UTC
Interlock ransomware gang exploited Cisco firewall zero-day weeks before disclosure: Amazon
The Record (Recorded Future News) · therecord.media · 2026-03-19 14:00 UTC
AWS Warns Hackers Have Abused Cisco Firewall Zero-Day Since January
Infosecurity Magazine · infosecurity-magazine.com · 2026-03-19 09:50 UTC
Cisco Firewall Vulnerability Exploited as Zero-Day in Interlock Ransomware Attacks
SecurityWeek · securityweek.com · 2026-03-19 08:57 UTC
Show filters & breakdown
Posts loaded: 0Publishers: 5Origin domains: 5Duplicates: -
Showing 5 / 0
Top publishers (this list)
- SC Media (1)
- CSO Online (1)
- The Record (Recorded Future News) (1)
- Infosecurity Magazine (1)
- SecurityWeek (1)
Top origin domains (this list)
- scworld.com (1)
- csoonline.com (1)
- therecord.media (1)
- infosecurity-magazine.com (1)
- securityweek.com (1)