CriticalCVE-2020-24786

    Zohocorp ManageEngine Exchange Reporter Plus: Authentication Bypass (CVE-2020-24786)

    Published Sources: CVE.org

    What is affected, what to do

    An issue was discovered in Zoho ManageEngine Exchange Reporter Plus before build number 5510, AD360 before build number 4228, ADSelfService Plus before build number 5817, DataSecurity Plus before build number 6033, RecoverManager Plus before build number 6017, EventLog Analyzer before build number 12136, ADAudit Plus before build number 6052, O365 Manager Plus before build number 4334, Cloud Security Plus before build number 4110, ADManager Plus before build number 7055, and Log360 before build number 5166. The remotely accessible Java servlet com.manageengine.ads.fw.servlet.UpdateProductDetails is prone to an authentication bypass. System integration properties can be modified and lead to full ManageEngine suite compromise.

    The available sources name no fixed version. Check the vendor guidance in the references below.

    Affected
    • Zohocorp ManageEngine ADSelfService Plus lte *..5.7
    • Zohocorp ManageEngine ADSelfService Plus eq 5.8..5.8
    • Zohocorp ManageEngine Exchange Reporter Plus lte *..5.4
    • Zohocorp ManageEngine Exchange Reporter Plus eq 5.5..5.5
    • Zohocorp Manageengine Ad360 lte *..4.1
    • Zohocorp Manageengine Ad360 eq 4.2..4.2
    • Zohocorp ManageEngine DataSecurity Plus lte *..5.0
    • Zohocorp ManageEngine DataSecurity Plus eq 6.0..6.0
    • Zohocorp Manageengine Recovermanager Plus lte *..5.4
    • Zohocorp Manageengine Recovermanager Plus eq 6.0..6.0
    • Zohocorp ManageEngine EventLog Analyzer lte *..12.1.2
    • Zohocorp ManageEngine EventLog Analyzer eq 12.1.3..12.1.3
    • ManageEngine ADAudit Plus lte *..5.1
    • ManageEngine ADAudit Plus eq 6.0..6.0
    • Zoho ManageEngine O365 Manager Plus lte *..4.2
    • Zoho ManageEngine O365 Manager Plus eq 4.3..4.3
    • Zohocorp Manageengine Cloud Security Plus lte *..4.0
    • Zohocorp Manageengine Cloud Security Plus eq 4.1..4.1
    • Zohocorp ManageEngine ADManager Plus lte *..6.6
    • Zohocorp ManageEngine ADManager Plus eq 7.0..7.0
    • Zohocorp ManageEngine Log360 lte *..5.0
    • Zohocorp ManageEngine Log360 eq 5.1..5.1

    Not sure whether and how you are affected? Ask a question about this vulnerability

    Metrics

    9.8

    Priority

    XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

    Source: NVD, CVSS v3

    9.8

    CVSS v3

    Severity Critical on the scale from 0 to 10.

    Source: CVE.org

    12.8 %

    EPSS score

    Elevated — model estimates 10-50% exploitation likelihood.

    Source: FIRST EPSS, percentile 96.3

    Show all metrics
    Severity
    Critical
    Priority (0–325)

    The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?

    Read in glossary
    123.16 Methodology
    Exploit maturity

    An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.

    Read in glossary
    no public PoC known
    XIEM Effective CVSS

    XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.

    Read in glossary
    9.8 Methodology
    CVSS v3

    CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.

    Read in glossary
    9.8
    EPSS score

    The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.

    Read in glossary
    12.8 %
    Elevated — model estimates 10-50% exploitation likelihood.
    EPSS percentile

    The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.

    Read in glossary
    96.3
    Critical — this CVE ranks in the top fifth of all CVEs scored today (rank ≥ 80%).
    KEV status

    The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.

    Read in glossary
    —
    Published

    Detection rules

    No NEOSEC detection rule is available for this vulnerability yet.

    Classification under NIS2 and CRA

    Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

    NIS2

    NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.

    Read in glossary
    High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
    CRA

    The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.

    Read in glossary
    From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
    ISO/IEC 27001

    ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.

    Read in glossary
    Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

    Description

    An issue was discovered in Zoho ManageEngine Exchange Reporter Plus before build number 5510, AD360 before build number 4228, ADSelfService Plus before build number 5817, DataSecurity Plus before build number 6033, RecoverManager Plus before build number 6017, EventLog Analyzer before build number 12136, ADAudit Plus before build number 6052, O365 Manager Plus before build number 4334, Cloud Security Plus before build number 4110, ADManager Plus before build number 7055, and Log360 before build number 5166. The remotely accessible Java servlet com.manageengine.ads.fw.servlet.UpdateProductDetails is prone to an authentication bypass. System integration properties can be modified and lead to full ManageEngine suite compromise.

    Source: NVD (NIST), cvelistv5

    Affected products

    The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

    Affected products
    Affected versionsFixed in
    zohocorpmanageengine_ad360
    • 4.2
    • ≤ 4.1
    • —
    • —
    zohocorpmanageengine_adaudit_plus
    • ≤ 5.1
    • 6.0
    • —
    • —
    zohocorpmanageengine_admanager_plus
    • 7.0
    • ≤ 6.6
    • —
    • —
    zohocorpmanageengine_adselfservice_plus
    • 5.8
    • ≤ 5.7
    • —
    • —
    zohocorpmanageengine_cloud_security_plus
    • 4.1
    • ≤ 4.0
    • —
    • —
    zohocorpmanageengine_datasecurity_plus
    • 6.0
    • ≤ 5.0
    • —
    • —
    zohocorpmanageengine_eventlog_analyzer
    • 12.1.3
    • ≤ 12.1.2
    • —
    • —
    zohocorpmanageengine_exchange_reporter_plus
    • ≤ 5.4
    • 5.5
    • —
    • —
    zohocorpmanageengine_log360
    • 5.1
    • ≤ 5.0
    • —
    • —
    zohocorpmanageengine_o365_manager_plus
    • 4.3
    • ≤ 4.2
    • —
    • —
    zohocorpmanageengine_recovermanager_plus
    • 6.0
    • ≤ 5.4
    • —
    • —

    Vendors and products

    References & sources

    • manageengine.comdata-security/release-notes.htmlx_refsource_MISC, Vendor advisory
    • pitstop.manageengine.comportal/en/kb/articles/manageengine-log360-security-advisory-reg…x_refsource_MISC, Vendor advisory
    • medium.com@frycos/another-zoho-manageengine-story-7b472f1515f5x_refsource_MISC
    • pitstop.manageengine.comportal/en/community/topic/admanager-plus-fixes-and-enhancementsx_refsource_MISC, Vendor advisory
    • pitstop.manageengine.comportal/en/kb/articles/manageengine-cloud-security-plus-security…x_refsource_MISC, Vendor advisory
    • pitstop.manageengine.comportal/en/community/topic/how-to-identify-and-mitigate-the-unau…x_refsource_MISC, Vendor advisory
    • pitstop.manageengine.comportal/en/community/topic/how-to-identify-and-mitigate-the-unau…x_refsource_MISC, Vendor advisory
    • manageengine.comproducts/eventlog/features-new.htmlx_refsource_MISC, Vendor advisory
    • pitstop.manageengine.comportal/en/community/topic/how-to-identify-and-mitigate-the-unau…x_refsource_MISC, Vendor advisory
    • pitstop.manageengine.comportal/en/community/topic/how-to-fix-the-unauthenticated-produc…x_refsource_MISC, Vendor advisory
    • pitstop.manageengine.comportal/en/community/topic/how-to-fix-the-unauthenticated-produc…x_refsource_MISC, Vendor advisory
    • pitstop.manageengine.comportal/en/community/topic/how-to-fix-the-unauthenticated-produc…x_refsource_MISC, Vendor advisory
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