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Actively exploitedKnown ransomware use

CVE-2022-47966 Zoho ManageEngine Multiple Products Remote Code Execution Vulnerability

Multiple Zoho ManageEngine products contain an unauthenticated remote code execution vulnerability due to the usage of an outdated third-party dependency, Apache Santuario.

From the CISA KEV catalogue version 2026.11.06, with Cybergen analysis. Updated 6 Nov 2026.

Our Assessment

Should You Worry?

Patch nowCybergen assessment
  • CISA confirmed exploitation in the wild and added it to the Known Exploited Vulnerabilities catalogue on 23 Jan 2023.
  • CISA lists it as known to be used in ransomware campaigns.
  • Rated Critical severity (CVSS 9.8, scored by CISA).
  • It has been in the catalogue for 1,383 days. Systems still unpatched now have almost certainly been scanned for it.
The Vulnerability

What It Is

Multiple Zoho ManageEngine on-premise products, such as ServiceDesk Plus through 14003, allow remote code execution due to use of Apache Santuario xmlsec (aka XML Security for Java) 1.4.1, because the xmlsec XSLT features, by design in that version, make the application responsible for certain security protections, and the ManageEngine applications did not provide those protections. This affects Access Manager Plus before 4308, Active Directory 360 before 4310, ADAudit Plus before 7081, ADManager Plus before 7162, ADSelfService Plus before 6211, Analytics Plus before 5150, Application Control Plus before 10.1.2220.18, Asset Explorer before 6983, Browser Security Plus before 11.1.2238.6, Device Control Plus before 10.1.2220.18, Endpoint Central before 10.1.2228.11, Endpoint Central MSP before 10.1.2228.11, Endpoint DLP before 10.1.2137.6, Key Manager Plus before 6401, OS Deployer before 1.1.2243.1, PAM 360 before 5713, Password Manager Pro before 12124, Patch Manager Plus before 10.1.2220.18, Remote Access Plus before 10.1.2228.11, Remote Monitoring and Management (RMM) before 10.1.41. ServiceDesk Plus before 14004, ServiceDesk Plus MSP before 13001, SupportCenter Plus before 11026, and Vulnerability Manager Plus before 10.1.2220.18. Exploitation is only possible if SAML SSO has ever been configured for a product (for some products, exploitation requires that SAML SSO is currently active).

From Watch to Action

What To Do Now

  1. 1

    Find it

    Search your asset inventory and external attack surface for Zoho ManageEngine. Include cloud images, appliances and anything a supplier runs for you.

    Attack Surface Management
  2. 2

    Fix it

    Apply updates per vendor instructions.

    Vulnerability Management
  3. 3

    Hunt for compromise

    If an affected system was reachable before you patched, assume it may have been hit. Check logs, new accounts, web shells and outbound connections from the date of exposure.

    Incident Response
  4. 4

    Prove it is fixed

    Rescan or test the system after patching. Upgrades that fail silently and forgotten secondary instances are common.

    Penetration Testing

Vendor Advisories

Regulation

The Compliance Clock

Cyber EssentialsRated critical, so if it affects devices in your Cyber Essentials scope, the update must be installed within 14 days of the vendor releasing it.NIS2If exploitation causes a significant incident, essential and important entities owe their CSIRT an early warning within 24 hours and a notification within 72 hours.DORAFinancial entities must classify ICT incidents and send an initial notification for a major incident within strict deadlines, with exploited flaws a common cause.US federal (BOD 22-01)Federal civilian agencies had until 13 Feb 2023 to remediate. A sensible benchmark for everyone else.

General guidance, not legal advice. Your obligations depend on your sector, scope and jurisdiction.

Stay Ahead

More Exploited Zoho Flaws

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CVE-2022-28810Zoho ManageEngine ADSelfService Plus Remote Code Execution VulnerabilityAdded 7 Mar 2023CVE-2022-35405Zoho ManageEngine Multiple Products Remote Code Execution VulnerabilityAdded 22 Sep 2022CVE-2021-44515Zoho Desktop Central Authentication Bypass VulnerabilityAdded 10 Dec 2021CVE-2021-37415Zoho ManageEngine ServiceDesk Authentication Bypass VulnerabilityAdded 1 Dec 2021CVE-2021-44077Zoho ManageEngine ServiceDesk Plus Remote Code Execution VulnerabilityAdded 1 Dec 2021CVE-2021-40539 · RansomwareZoho ManageEngine ADSelfService Plus Authentication Bypass VulnerabilityAdded 3 Nov 2021

All 9 exploited Zoho vulnerabilities

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Evidence

Sources

  1. CISA Known Exploited Vulnerabilities catalogue
  2. NVD: CVE-2022-47966
  3. CVE record: CVE-2022-47966
  4. FIRST EPSS
  5. manageengine.com/security/advisory/CVE/cve-2022-47966.html
  6. github.com/apache/santuario-xml-security-java/tags?after=1.4.6
  7. packetstormsecurity.com/files/170882/Zoho-ManageEngine-ServiceDesk-Plus-14003-Remote-Code-Execution.
  8. packetstormsecurity.com/files/170925/ManageEngine-ADSelfService-Plus-Unauthenticated-SAML-Remote-Cod
  9. packetstormsecurity.com/files/170943/Zoho-ManageEngine-Endpoint-Central-MSP-10.1.2228.10-Remote-Code
  10. blog.viettelcybersecurity.com/saml-show-stopper/
  11. github.com/horizon3ai/CVE-2022-47966
  12. horizon3.ai/manageengine-cve-2022-47966-technical-deep-dive/