CVE-2024-1481Public exploitNetwork attack vector

Authentication service interruption via kinit option injection

Published Apr 10, 2024 · Updated Feb 25, 2026

Improper input validation in FreeIPA 4.10.1 allows remote attackers to interrupt authentication services via crafted HTTP requests. The login_password handler passes the unvalidated user principal to kinit before its fixed options, so leading hyphens are parsed as kinit flags. No authentication is required, and selected options can disrupt the service or access files and system keytabs under the server process's permissions.

CVSS severity5.3
Medium
EPSS probability1.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in FreeIPA 4.10.1 allows remote attackers to interrupt authentication services via crafted HTTP requests. The login_password handler passes the unvalidated user principal to kinit before its fixed options, so leading hyphens are parsed as kinit flags. No authentication is required, and selected options can disrupt the service or access files and system keytabs under the server process's permissions.

The record

CVE
CVE-2024-1481
Published
Apr 10, 2024
Updated
Feb 25, 2026
Vendor
Red Hat
Product
Red Hat Enterprise Linux 8
Classifications
CWE-20, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 10, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Red Hat · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.
FreeIPA Project · FreeIPAversion=4.10.1

Published CVSS scores

5.3Red HatCVSS: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 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 exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499.004Application or System Exploitation

Public exploit references

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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