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CVE-2025-54500 is an HTTP/2 implementation flaw in F5 BIG-IP and related products that allows a remote, unauthenticated attacker to trigger denial of service by sending malformed HTTP/2 control frames. According to F5 advisory k000152001, the issue is associated with the HTTP/2 "MadeYouReset" attack technique, in which malformed control-frame handling breaks enforcement of the maximum concurrent streams limit. This accounting or stream-management failure allows a single connection to drive excessive request processing beyond intended HTTP/2 concurrency controls, resulting in abnormal resource consumption on the data plane. The issue is described as affecting HTTP/2 processing rather than the management/control plane.
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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.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A previously addressed F5 BIG-IP HTTP/2 denial-of-service vulnerability via CPU exhaustion, mentioned as part of vendor security history.
A product-specific CVE associated with the MadeYouReset HTTP/2 DoS technique affecting F5 BIG-IP.
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.