HIGH

CVE-2021-33256

CVSS v3

8.8

HIGH

EPSS Score

17.4%

exploit probability

CISA KEV

No

known exploited

Exploitation

SSVC status

Description

A CSV injection vulnerability on the login panel of ManageEngine ADSelfService Plus Version: 6.1 Build No: 6101 can be exploited by an unauthenticated user. The j_username parameter seems to be vulnerable and a reverse shell could be obtained if a privileged user exports "User Attempts Audit Report" as CSV file. Note: The vendor disputes this vulnerability, claiming "This is not a valid vulnerability in our ADSSP product. We don't see this as a security issue at our side.

Technical details

Published
8/9/2021

Frequently asked questions

What is CVE-2021-33256?

A CSV injection vulnerability on the login panel of ManageEngine ADSelfService Plus Version: 6.1 Build No: 6101 can be exploited by an unauthenticated user. The j_username parameter seems to be vulnerable and a reverse shell could be obtained if a privileged user exports "User Attempts Audit Report" as CSV file. Note: The vendor disputes this vulnerability, claiming "This is not a valid vulnerability in our ADSSP product. We don't see this as a security issue at our side.

Is CVE-2021-33256 actively exploited?

Active exploitation of CVE-2021-33256 has not been confirmed. The EPSS score is 17.4%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-33256?

CVE-2021-33256 has a CVSS v3 base score of 8.8 (HIGH severity).

Is CVE-2021-33256 affecting your environment?

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