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CVE-2025-52520 is an integer overflow vulnerability in Apache Tomcat multipart upload handling. In unlikely multipart-upload configurations, the overflow can bypass configured upload-size limits and cause a denial-of-service condition. Affected releases are Tomcat 11.0.0-M1 through 11.0.8, 10.1.0-M1 through 10.1.42, and 9.0.0.M1 through 9.0.106. Tomcat 8.5.0 through 8.5.100, which were end of life when the CVE was created, are also known to be affected.
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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.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A denial-of-service vulnerability affecting Apache Tomcat.
A vulnerability referenced by the AlmaLinux 9.6 local security-check notice; no technical impact, exploit status, or remediation details are provided for this CVE in the supplied content.
Unknown (listed as a trending CVE; associated in the list with Atlassian, but no technical details provided).
Listed as a trending/high-risk CVE this week; no additional technical details provided in the content.
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.