Loading vulnerability…
CVE-2025-48989 is an improper resource shutdown or release flaw in Apache Tomcat's HTTP/2 processing that permits the MadeYouReset denial-of-service attack. It affects Tomcat 11.0.0-M1 through 11.0.9, 10.1.0-M1 through 10.1.43, and 9.0.0.M1 through 9.0.107; older end-of-life versions may also be affected. An attacker can abuse HTTP/2 control-frame handling to degrade the Tomcat service or cause denial of service.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
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.
If you can’t patch tonight, do this now.
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.
20 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A denial-of-service flaw in Apache Tomcat's HTTP/2 implementation that can be triggered through HTTP/2 control frames, described as MadeYouReset.
A network-accessible, low-complexity vulnerability requiring no privileges or user interaction that can cause a complete availability impact. The supplied content associates it with an AlmaLinux 9.2 security advisory/local check.
A product-specific CVE associated with the MadeYouReset HTTP/2 DoS technique affecting Apache Tomcat.
A high-severity denial-of-service vulnerability in Apache Tomcat’s HTTP/2 implementation that can be triggered via crafted HTTP/2 stream reset/connection management behavior, leading to excessive memory allocation (OutOfMemoryError) and server unresponsiveness.
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.