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CVE-2019-1978 is a filtering bypass vulnerability in the stream reassembly component of Cisco Firepower Threat Defense (FTD) Software, Cisco FirePOWER Services Software for ASA, and Cisco Firepower Management Center (FMC) Software. According to Cisco, the issue is caused by improper reassembly of traffic streams. An unauthenticated remote attacker can send crafted traffic streams through an affected device so that the device incorrectly reassembles the stream and fails to apply filtering protections as intended. As a result, malicious requests that should have been blocked can traverse the security device and reach protected downstream systems.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate 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.