CVE-2022-37437Network attack vector

S3 traffic interception or alteration via certificate-validation omission

Published Aug 16, 2022 · Updated Sep 16, 2024

Improper certificate validation in Splunk Enterprise 9.0.0 allows remote attackers to intercept or alter S3 destination traffic. The Splunk Web Ingest Actions path stores an S3 destination without applying configured server-certificate and server-name checks to its [rfs:s3] output settings. Exposure requires both a destination created through Splunk Web and configured TLS validation; outputs.conf-created destinations are unaffected.

CVSS severity7.4
High
EPSS probability0.44%
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

Improper certificate validation in Splunk Enterprise 9.0.0 allows remote attackers to intercept or alter S3 destination traffic. The Splunk Web Ingest Actions path stores an S3 destination without applying configured server-certificate and server-name checks to its [rfs:s3] output settings. Exposure requires both a destination created through Splunk Web and configured TLS validation; outputs.conf-created destinations are unaffected.

The record

CVE
CVE-2022-37437
Published
Aug 16, 2022
Updated
Sep 16, 2024
Vendor
Splunk, Inc.
Product
Splunk Enterprise
Classifications
CWE-295, T1557
Attack vector
network
Privileges
unauthenticated

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=9.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Splunk, Inc. · Splunk Enterpriseversion=9.0.0

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.4Splunk, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-295Improper Certificate Validation
T1557Adversary-in-the-Middle

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