CVE-2022-37439

Application crash via malformed ZIP indexing

Published Aug 16, 2022 · Updated Sep 16, 2024

Denial of service in Splunk Enterprise and Universal Forwarder affected releases allows local users to crash the application via file monitoring. The Monitor Processor indexes a specially crafted ZIP file and crashes when processing malformed compressed data, with repeated restart attempts also failing until the file is removed. Exploitation requires write access to a monitored directory not restricted to Splunk, system, or root accounts; default monitored directories and tightly privileged paths are informational only.

CVSS severity5.5
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Denial of service in Splunk Enterprise and Universal Forwarder affected releases allows local users to crash the application via file monitoring. The Monitor Processor indexes a specially crafted ZIP file and crashes when processing malformed compressed data, with repeated restart attempts also failing until the file is removed. Exploitation requires write access to a monitored directory not restricted to Splunk, system, or root accounts; default monitored directories and tightly privileged paths are informational only.

The record

CVE
CVE-2022-37439
Published
Aug 16, 2022
Updated
Sep 16, 2024
Vendor
Splunk, Inc.
Product
Splunk Enterprise
Classifications
CWE-409, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 16, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=8.1 <8.1.11
  2. Affected versionversion=8.2 <8.2.7.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Splunk, Inc. · Splunk Enterpriseversion=8.1 <8.1.11; version=8.2 <8.2.7.1
Splunk, Inc. · Splunk Universal Forwarderversion=8.1.11; version=8.2 <8.2.7.1

Published CVSS scores

5.5Splunk Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-409Improper Handling of Highly Compressed Data (Data Amplification)
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo