HIGH

CVE-2021-42840

CVSS v3

8.8

HIGH

EPSS Score

49.1%

exploit probability

CISA KEV

No

known exploited

Exploitation

SSVC status

Description

SuiteCRM before 7.11.19 allows remote code execution via the system settings Log File Name setting. In certain circumstances involving admin account takeover, logger_file_name can refer to an attacker-controlled PHP file under the web root, because only the all-lowercase PHP file extensions were blocked. NOTE: this issue exists because of an incomplete fix for CVE-2020-28328.

Technical details

Published
10/22/2021

Frequently asked questions

What is CVE-2021-42840?

SuiteCRM before 7.11.19 allows remote code execution via the system settings Log File Name setting. In certain circumstances involving admin account takeover, logger_file_name can refer to an attacker-controlled PHP file under the web root, because only the all-lowercase PHP file extensions were blocked. NOTE: this issue exists because of an incomplete fix for CVE-2020-28328.

Is CVE-2021-42840 actively exploited?

Active exploitation of CVE-2021-42840 has not been confirmed. The EPSS score is 49.1%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-42840?

CVE-2021-42840 has a CVSS v3 base score of 8.8 (HIGH severity).

Is CVE-2021-42840 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.