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Multiple Cisco products are affected by a denial-of-service vulnerability in the Snort 3 detection engine. The issue is caused by incomplete error checking when parsing Multicast DNS (mDNS) fields within an HTTP header. An unauthenticated remote attacker can exploit this by sending crafted HTTP packets over an established connection such that they are processed by Snort 3, triggering an unexpected restart of the Snort 3 Detection Engine and interrupting packet inspection.
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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.
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.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.