8.8

CVE-2020-11067: Deserialization of Untrusted Data in TYPO3 CMS

Modified
Published 13-05-2020Last modified 04-08-2024

Vulnerability summary

CVE-2020-11067 is a high (CVSS 8.8) Deserialization of Untrusted Data vulnerability in typo3. EPSS estimates a 1.99% chance of exploitation in the next 30 days, higher than 80.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 8.8, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
1.99%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 13-05-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.99%

Chance of exploitation in the next 30 days

Percentile

81%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.99% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Typo32 products
  • typo3≥ 9.0.0, ≤ 9.5.16 | ≥ 10.0.0, ≤ 10.4.1
  • typo3 cms≥ 9.0.0, < 9.5.17 | ≥ 10.0.0, < 10.4.2

1 vendor · 2 products

References

1 links