CVE-2020-24786

CVE-2020-24786 is a critical-severity vulnerability in Zohocorp Manageengine Adselfservice Plus with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 13% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-287.

Key facts

• Severity: Critical (CVSS 3.x base score 9.8)
• CVSS v2: 10.0
• EPSS exploit prediction: 13% (96th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-287
• Affected product: Zohocorp Manageengine Adselfservice Plus
• Published: 2020-08-31
• Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2020-24786?

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.

How severe is CVE-2020-24786?

CVE-2020-24786 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-24786 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-24786?

CVE-2020-24786 primarily affects Zohocorp Manageengine Adselfservice Plus. In total, 152 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-24786?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-24786 published?

CVE-2020-24786 was published on 2020-08-31 and last updated on 2026-06-17.

References

• https://medium.com/%40frycos/another-zoho-manageengine-story-7b472f1515f5
• https://pitstop.manageengine.com/portal/en/community/topic/admanager-plus-fixes-and-enhancements
• https://pitstop.manageengine.com/portal/en/community/topic/how-to-fix-the-unauthenticated-product-integration-vulnerability
• https://pitstop.manageengine.com/portal/en/community/topic/how-to-fix-the-unauthenticated-product-integration-vulnerability-17-5-2020
• https://pitstop.manageengine.com/portal/en/community/topic/how-to-fix-the-unauthenticated-product-integration-vulnerability-18-5-2020
• https://pitstop.manageengine.com/portal/en/community/topic/how-to-identify-and-mitigate-the-unauthenticated-product-integration-vulnerability
• https://pitstop.manageengine.com/portal/en/community/topic/how-to-identify-and-mitigate-the-unauthenticated-product-integration-vulnerability-15-5-2020-1
• https://pitstop.manageengine.com/portal/en/community/topic/how-to-identify-and-mitigate-the-unauthenticated-product-integration-vulnerability-18-5-2020
• https://pitstop.manageengine.com/portal/en/kb/articles/manageengine-cloud-security-plus-security-advisory-regarding-unauthenticated-product-integration-vulnerability
• https://pitstop.manageengine.com/portal/en/kb/articles/manageengine-log360-security-advisory-regarding-unauthenticated-product-integration-vulnerability
• https://www.manageengine.com/data-security/release-notes.html
• https://www.manageengine.com/products/eventlog/features-new.html

Affected products (152)

• cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:*:*:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.8:-:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.8:5800:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.8:5801:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.8:5802:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.8:5803:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.8:5804:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.8:5805:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.8:5806:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.8:5807:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.8:5808:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.8:5809:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.8:5810:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.8:5811:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.8:5812:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.8:5813:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.8:5814:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.8:5815:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.8:5816:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_exchange_reporter_plus:*:*:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_exchange_reporter_plus:5.5:5500:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_exchange_reporter_plus:5.5:5501:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_exchange_reporter_plus:5.5:5502:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_exchange_reporter_plus:5.5:5503:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_exchange_reporter_plus:5.5:5504:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_ad360:*:*:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_ad360:4.2:4200:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_ad360:4.2:4201:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_ad360:4.2:4202:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_ad360:4.2:4203:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_ad360:4.2:4204:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_ad360:4.2:4205:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_ad360:4.2:4206:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_ad360:4.2:4207:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_ad360:4.2:4208:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_ad360:4.2:4209:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_ad360:4.2:4210:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_ad360:4.2:4212:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_ad360:4.2:4213:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_ad360:4.2:4214:*:*:*:*:*:*

More vulnerabilities in Zohocorp Manageengine Adselfservice Plus

• CVE-2019-3905 — Critical (CVSS 10.0): Zoho ManageEngine ADSelfService Plus 5.x before build 5703 has SSRF.
• CVE-2023-35854 — Critical (CVSS 9.8): Zoho ManageEngine ADSelfService Plus through 6113 has an authentication bypass that can be exploited to steal the…
• CVE-2022-47966 — Critical (CVSS 9.8): Multiple Zoho ManageEngine on-premise products, such as ServiceDesk Plus through 14003, allow remote code execution due…
• CVE-2021-37422 — Critical (CVSS 9.8): Zoho ManageEngine ADSelfService Plus 6111 and prior is vulnerable to SQL Injection while linking the databases.
• CVE-2021-37423 — Critical (CVSS 9.8): Zoho ManageEngine ADSelfService Plus 6111 and prior is vulnerable to linked applications takeover.
• CVE-2021-40539 — Critical (CVSS 9.8): Zoho ManageEngine ADSelfService Plus version 6113 and prior is vulnerable to REST API authentication bypass with…

All CVEs affecting Zohocorp Manageengine Adselfservice Plus →

Other CWE-287 (Improper Authentication) vulnerabilities

• CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
• CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
• CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
• CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
• CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
• CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →