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CVE-2025-58057 is an uncontrolled resource-allocation vulnerability in Netty decompression decoders, notably BrotliDecoder. When processing specially crafted compressed input, BrotliDecoder.decompress can repeatedly invoke the decompression pull operation without a bound, producing output in 64 KiB increments. The resulting byte buffers are retained in the decoder output list and remain reachable, allowing allocations to accumulate until the JVM exhausts available memory. Affected releases include netty-codec-compression 4.1.124.Final and earlier and netty-codec 4.2.4.Final and earlier.
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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.
If you can’t patch tonight, do this now.
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.
29 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.