VulnerabilityModified

CVE-2021-20837

CRITICAL 9.8EPSS 88.1%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 88.1%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.

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 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 88.14% probability · 100th percentile
CISA KEV: Not listed
Weakness: CWE-78
Affected: sixapart/movable type
Source: vultures@jpcert.or.jp

References

http://packetstormsecurity.com/files/164705/Movable-Type-7-r.5002-XMLRPC-API-Remote-Command-Injection.htmlExploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/164818/Movable-Type-7-r.5002-XMLRPC-API-Remote-Command-Injection.htmlThird Party Advisory, VDB Entry
https://jvn.jp/en/jp/JVN41119755/index.htmlThird Party Advisory
https://movabletype.org/news/2021/10/mt-782-683-released.htmlRelease Notes, Vendor Advisory
http://packetstormsecurity.com/files/164705/Movable-Type-7-r.5002-XMLRPC-API-Remote-Command-Injection.htmlExploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/164818/Movable-Type-7-r.5002-XMLRPC-API-Remote-Command-Injection.htmlThird Party Advisory, VDB Entry
https://jvn.jp/en/jp/JVN41119755/index.htmlThird Party Advisory
https://movabletype.org/news/2021/10/mt-782-683-released.htmlRelease Notes, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.