CVE-2025-59014Network attack vector

Backend access denial via malformed bookmark data

Published Sep 9, 2025 · Updated Sep 9, 2025

Denial of service in the TYPO3 CMS Bookmark Toolbar allows remote authenticated users to block access to the backend interface. In versions 11.0.0 through 11.5.47, 12.0.0 through 12.4.36, and 13.0.0 through 13.4.17, insufficient validation accepts manipulated bookmark data and the resulting uncaught exception places the backend interface in a general error state. Exploitation requires an administrator-level backend account, and the interruption blocks further backend interface access.

CVSS severity5.1
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the TYPO3 CMS Bookmark Toolbar allows remote authenticated users to block access to the backend interface. In versions 11.0.0 through 11.5.47, 12.0.0 through 12.4.36, and 13.0.0 through 13.4.17, insufficient validation accepts manipulated bookmark data and the resulting uncaught exception places the backend interface in a general error state. Exploitation requires an administrator-level backend account, and the interruption blocks further backend interface access.

The record

CVE
CVE-2025-59014
Published
Sep 9, 2025
Updated
Sep 9, 2025
Vendor
in2code GmbH
Product
TYPO3 CMS
Classifications
CWE-248, T1499
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 9, 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=11.0.0 <11.5.48
  2. Affected versionversion=12.0.0 <12.4.37
  3. Affected versionversion=13.0.0 <13.4.18

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

in2code GmbH · TYPO3 CMSversion=11.0.0 <11.5.48; version=12.0.0 <12.4.37; version=13.0.0 <13.4.18

Published CVSS scores

2.7NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
5.1TYPO3CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA: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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-248Uncaught Exception
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

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Your stack

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