CVE-2023-32712Network attack vector

Terminal code execution via ANSI log injection

Published Jun 1, 2023 · Updated Feb 28, 2025

Log injection in Splunk Enterprise before 9.1.0.2, 9.0.5.1, or 8.2.11.2 allows remote attackers to target terminal users. Unauthenticated HTTP requests write attacker-controlled ANSI escape sequences into Splunk log files; Universal Forwarder before 9.1.1, 9.0.6, or 8.2.12 is affected only when its management service is network-accessible. Execution requires a user to read the poisoned log in a terminal that interprets ANSI sequences, and resulting code runs with that terminal's permissions.

CVSS severity8.6
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Log injection in Splunk Enterprise before 9.1.0.2, 9.0.5.1, or 8.2.11.2 allows remote attackers to target terminal users. Unauthenticated HTTP requests write attacker-controlled ANSI escape sequences into Splunk log files; Universal Forwarder before 9.1.1, 9.0.6, or 8.2.12 is affected only when its management service is network-accessible. Execution requires a user to read the poisoned log in a terminal that interprets ANSI sequences, and resulting code runs with that terminal's permissions.

The record

CVE
CVE-2023-32712
Published
Jun 1, 2023
Updated
Feb 28, 2025
Vendor
Splunk, Inc.
Product
Splunk Enterprise
Classifications
CWE-117, CWE-116, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 1, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 28, 2025Record 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=8.2 <8.2.11.2
  2. Affected versionversion=9.0 <9.0.5.1
  3. Affected versionversion=9.1 <9.1.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Splunk, Inc. · Splunk Enterpriseversion=8.2 <8.2.11.2; version=9.0 <9.0.5.1; version=9.1 <9.1.0.2
Splunk, Inc. · Splunk Universal Forwarderversion=8.2 <8.2.12; version=9.0 <9.0.6; version=9.1 <9.1.1

Published CVSS scores

8.6SplunkCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
3.1NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/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 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-117Improper Output Neutralization for Logs
CWE-116Improper Encoding or Escaping of Output
T1203Exploitation for Client Execution

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

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Your stack

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