CVE-2021-37415KEV · OVERDUE

Zoho ManageEngine ServiceDesk Authentication Bypass Vulnerability

Critical · published September 1, 2021

Patch now

Confirmed exploited, and the score agrees

CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 100.0th percentile for exploit probability.

1775
days past CISA
deadline
CVSS v3.1
9.8
EPSS
100%
Percentile
100.0
In the wild
Confirmed
What it is

🚨 A critical authentication bypass in Zoho ManageEngine ServiceDesk Plus means attackers could access sensitive REST-API URLs without any credentials! 🔥 Think of it as a hotel where anyone can simply stroll into the VIP lounge without even checking in — no keycard, no problem! That’s the level of security breach we’re facing here, folks! An attacker could exploit this vulnerability to access confidential data, manipulate service requests, or even make unauthorized changes to the system. This could lead to a catastrophic loss of sensitive information and trust, potentially crippling your organization's operational capabilities.

Put simply

Think of it as a hotel where anyone can simply stroll into the VIP lounge without even checking in — no keycard, no problem! That’s the level of security breach we’re facing here, folks! This vulnerability allows unauthorized users to access specific REST-API endpoints without needing proper authentication, effectively bypassing security measures designed to protect sensitive operations within the application.

What to do

An attacker could exploit this vulnerability to access confidential data, manipulate service requests, or even make unauthorized changes to the system. This could lead to a catastrophic loss of sensitive information and trust, potentially crippling your organization's operational capabilities. Immediately update Zoho ManageEngine ServiceDesk Plus to version 11302 or later to close this critical gap. Review your API access controls and monitor your logs for any suspicious activity that may have occurred during the window of vulnerability. You've got this! Follow these steps to lock things down and keep your data safe! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.99825 · 100.0th percentile
Published
2021-09-01T05:29Z
KEV added
2021-12-01 · due 2021-12-15
EPSS history
Timeline
  • 01 DEC 00:00Z
    Added to CISA KEV — remediate by Dec 15
    kev
  • 01 SEP 05:29Z
    Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authentication
    cvelistv5