Loading vulnerability…
CVE-2026-20082 is a denial-of-service vulnerability in Cisco Secure Firewall Adaptive Security Appliance (ASA) Software related to handling of embryonic connection limits. The flaw is caused by improper handling of new incoming TCP connections destined for management or data interfaces while the device is under a TCP SYN flood condition. By sending a crafted stream of traffic to an affected device, an unauthenticated remote attacker can trigger incorrect dropping of incoming TCP SYN packets. This prevents legitimate TCP sessions from being established and affects management-plane and data-plane TCP services exposed by the device.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
14 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A denial-of-service vulnerability in Cisco Secure Firewall ASA Software involving improper handling of embryonic connection limits during TCP SYN flood conditions, allowing an unauthenticated remote attacker to disrupt incoming TCP connections (including management and VPN).
TCP flood denial of service vulnerability affecting Cisco Adaptive Security Appliance (ASA) software.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.