CVE-2020-11067

Deserialization of Untrusted Data in TYPO3 CMS

HIGH
8.8
CVSS Score
Published: May 13, 2020 at 11:25 PM UTC
Updated: June 17, 2026 at 02:48 AM UTC
1 product affected across 1 vendorTYPO3

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Severity
HIGH8.8
Exploit prediction
EPSS 2%

Description

In TYPO3 CMS 9.0.0 through 9.5.16 and 10.0.0 through 10.4.1, it has been discovered that backend user settings (in $BE_USER->uc) are vulnerable to insecure deserialization. In combination with vulnerabilities of third party components, this can lead to remote code execution. A valid backend user account is needed to exploit this vulnerability. This has been fixed in 9.5.17 and 10.4.2.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

95%
v < 10.4.2v < 9.5.1710.0.0 ≤ v ≤ 10.4.19.0.0 ≤ v ≤ 9.5.16
Affected range stops below 10.4.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.5.17, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

CVSS

8.8HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-502

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