Zoho ManageEngine ServiceDesk Authentication Bypass Vulnerability
Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authentication.
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 4 / 5
- KEV catalog (CISA)01 Dec 2021
- Exploited in EUVD (ENISA)01 Dec 2021
- Used by ransomwareno
- EPSS above 10 %99.8%
- No account, over the networkyes
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: Apply updates per vendor instructions.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Affected products
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
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Published
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Exploitation reported (ENISA)
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Added to the KEV catalog
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CISA remediation due date
-
EPSS peak: 99.8%
References
Other exploited vulnerabilities from the same vendor
- CVE-2022-28810Zoho ManageEngine ADSelfService Plus Remote Code Execution Vulnerability6.6 · Background exploitation
- CVE-2022-47966Zoho ManageEngine Multiple Products Remote Code Execution Vulnerability9.9 · Background exploitation
- CVE-2022-35405Zoho ManageEngine Multiple Products Remote Code Execution Vulnerability9.3 · Background exploitation
- CVE-2021-44515Zoho Desktop Central Authentication Bypass Vulnerability9.3 · Background exploitation
- CVE-2021-44077Zoho ManageEngine ServiceDesk Plus Remote Code Execution Vulnerability9.1 · Background exploitation
- CVE-2021-40539Zoho ManageEngine ADSelfService Plus Authentication Bypass Vulnerability9.9 · Background exploitation