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Cisco PIX Firewall versions 6.3 and 7.0 can be forced into a sustained denial-of-service condition where new inbound TCP connections are blocked due to exhaustion of embryonic connection state. Remote attackers can send spoofed TCP packets that cause the PIX to create embryonic connections that will not complete with the end system, including SYN packets with invalid TCP checksums (which do not elicit a RST), or (from an external interface) a single byte of meaningless data, or packets with a TTL one less than required to reach the internal destination. These inputs result in half-open/invalid connection tracking entries that persist long enough to prevent legitimate new connections.
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No valid public exploits. Mallory filtered out 2 candidates as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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.
1 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
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.