CVE-2024-36124Network attack vector

JVM crash via unchecked decompression reads

Published Jun 3, 2024 · Updated Sep 5, 2024

Out-of-bounds read in iq80 Snappy before 0.5 allows remote attackers to crash the JVM by supplying malformed compressed data. The decompressor uses sun.misc.Unsafe to read byte arrays without Java bounds checks and can access data beyond the supplied array. An application must pass attacker-controlled compressed input to the library; exploitation interrupts the hosting JVM and has no reported data-read or write impact.

CVSS severity5.3
Medium
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in iq80 Snappy before 0.5 allows remote attackers to crash the JVM by supplying malformed compressed data. The decompressor uses sun.misc.Unsafe to read byte arrays without Java bounds checks and can access data beyond the supplied array. An application must pass attacker-controlled compressed input to the library; exploitation interrupts the hosting JVM and has no reported data-read or write impact.

The record

CVE
CVE-2024-36124
Published
Jun 3, 2024
Updated
Sep 5, 2024
Vendor
Xerial
Product
snappy-java
Classifications
CWE-125, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <0.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Xerial · snappy-javaversion=0 <0.5
KNP Labs · Snappyversion=< 0.5

Published CVSS scores

5.3GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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