CVE-2021-33256

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 79.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-08-09 · updated 2026-06-17
Weakness: CWE-1236

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.

Affected products

ManageEngine ADSelfService Plus: 6.1-6101

References

https://docs.unsafe-inline.com/0day/manageengine-adselfservice-plus-6.1-csv-injection
https://docs.unsafe-inline.com/0day/manageengine-adselfservice-plus-6.1-csv-injection

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