CVE WatchOct 8, 2026

CVE-2021-37137

The Snappy frame decoder function doesn't restrict the chunk length which may lead to excessive memory usage. Beside this it also may buffer

CVSS

7.5

High

EPSS

6.6%

p94

KEV

—

Exploit Today

0-100

Published: Oct 19, 2021 · Last modified: Oct 8, 2026 · CWE-400

EPSS · 30d

6.6%EPSS · 30 days6.6%

2026-10-042026-10-31

Technical description

The Snappy frame decoder function doesn't restrict the chunk length which may lead to excessive memory usage. Beside this it also may buffer reserved skippable chunks until the whole chunk was received which may lead to excessive memory usage as well. This vulnerability can be triggered by supplying malicious input that decompresses to a very big size (via a network stream or a file) or by sending a huge skippable chunk.

Official references

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