Is CVE-2021-20837 actively exploited?

CVE-2021-20837 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2021-20837?

CVE-2021-20837 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2021-20837?

Patch guidance is available from sixapart security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-20837.

Fix CVE-2021-20837 - CRITICAL sixapart movable type

Q: Which products are affected by CVE-2021-20837?

7 products: sixapart movable type, sixapart movable type, sixapart movable type, sixapart movable type, sixapart movable type, and 2 more.

Description

Movable Type 7 r.5002 and earlier (Movable Type 7 Series), Movable Type 6.8.2 and earlier (Movable Type 6 Series), Movable Type Advanced 7 r.5002 and earlier (Movable Type Advanced 7 Series), Movable Type Advanced 6.8.2 and earlier (Movable Type Advanced 6 Series), Movable Type Premium 1.46 and earlier, and Movable Type Premium Advanced 1.46 and earlier allow remote attackers to execute arbitrary OS commands via unspecified vectors. Note that all versions of Movable Type 4.0 or later including unsupported (End-of-Life, EOL) versions are also affected by this vulnerability.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-78 · OS Command Injection

Metadata

Primary Vendor: SIXAPART
Published: 10/26/2021
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

sixapart : movable_typesixapart : movable_typesixapart : movable_typesixapart : movable_typesixapart : movable_typesixapart : movable_typesixapart : movable_type

Remediation Guidance

Executive Summary

View on NIST NVD