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CVE-2019-0196 is a use-after-free vulnerability in Apache HTTP Server mod_http2 affecting versions 2.4.17 through 2.4.38. Fuzzed HTTP/2 network input can cause request handling to access freed memory during a string comparison used to determine the request method. The resulting stale-memory access can cause the server to process the request incorrectly. Apache HTTP Server 2.4.39 includes the upstream fix.
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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 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.
19 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A remotely exploitable, low-complexity denial-of-service vulnerability with no authentication or user interaction required, scored CVSS v3 7.5 for availability impact.
A read-after-free flaw in Apache HTTP Server mod_http2 during a string comparison.
A read-after-free vulnerability in Apache HTTP Server's mod_http2 string-comparison handling.
An Apache HTTP Server mod_http2 read-after-free vulnerability during a string comparison.
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.