How severe is CVE-2021-31531?

CVE-2021-31531 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-2021-31531 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-31531?

CVE-2021-31531 primarily affects Zohocorp Manageengine Servicedesk Plus Msp. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-31531?

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-2021-31531 published?

CVE-2021-31531 was published on 2021-06-29 and last updated on 2026-06-17.

CVE-2021-31531

CVE-2021-31531 is a critical-severity vulnerability in Zohocorp Manageengine Servicedesk Plus Msp with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Zohocorp Manageengine Servicedesk Plus Msp
Published: 2021-06-29
Last modified: 2026-06-17

Description

Zoho ManageEngine ServiceDesk Plus MSP before 10521 is vulnerable to Server-Side Request Forgery (SSRF).

Frequently asked questions

What is CVE-2021-31531?: Zoho ManageEngine ServiceDesk Plus MSP before 10521 is vulnerable to Server-Side Request Forgery (SSRF).
How severe is CVE-2021-31531?: CVE-2021-31531 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-2021-31531 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-31531?: CVE-2021-31531 primarily affects Zohocorp Manageengine Servicedesk Plus Msp. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-31531?: 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-2021-31531 published?: CVE-2021-31531 was published on 2021-06-29 and last updated on 2026-06-17.

References

Affected products (23)

cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:*:*:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:*:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10500:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10501:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10502:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10503:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10504:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10505:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10506:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10507:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10508:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10509:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10510:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10511:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10512:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10513:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10514:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10515:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10516:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10517:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10518:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10519:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10520:*:*:*:*:*:*

More vulnerabilities in Zohocorp Manageengine Servicedesk Plus Msp

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-2021-44675 — Critical (CVSS 9.8): Zoho ManageEngine ServiceDesk Plus MSP before 10.5 Build 10534 is vulnerable to unauthenticated remote code execution…
CVE-2021-44077 — Critical (CVSS 9.8): Zoho ManageEngine ServiceDesk Plus before 11306, ServiceDesk Plus MSP before 10530, and SupportCenter Plus before 11014…
CVE-2023-22964 — Critical (CVSS 9.1): Zoho ManageEngine ServiceDesk Plus MSP before 10611, and 13x before 13004, is vulnerable to authentication bypass when…
CVE-2022-40773 — High (CVSS 8.8): Zoho ManageEngine ServiceDesk Plus MSP before 10609 and SupportCenter Plus before 11025 are vulnerable to privilege…
CVE-2024-38869 — High (CVSS 8.3): Zohocorp ManageEngine Endpoint Central affected by Incorrect authorization vulnerability in remote office deploy…

All CVEs affecting Zohocorp Manageengine Servicedesk Plus Msp →

Other CWE-918 (Server-Side Request Forgery (SSRF)) vulnerabilities

CVE-2026-47938 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) versions 7.4.3 build 9394 and earlier are affected by a Server-Side Request Forgery (SSRF)…
CVE-2026-35431 — Critical (CVSS 10.0): Server-side request forgery (ssrf) in Microsoft Entra ID Entitlement Management allows an unauthorized attacker to…
CVE-2026-32186 — Critical (CVSS 10.0): Server-side request forgery (ssrf) in Microsoft Bing allows an unauthorized attacker to elevate privileges over a…
CVE-2026-33107 — Critical (CVSS 10.0): Server-side request forgery (ssrf) in Azure Databricks allows an unauthorized attacker to elevate privileges over a…
CVE-2026-32871 — Critical (CVSS 10.0): FastMCP is a Pythonic way to build MCP servers and clients. Prior to version 3.2.0, the OpenAPIProvider in FastMCP…
CVE-2026-32169 — Critical (CVSS 10.0): Server-side request forgery (ssrf) in Azure Cloud Shell allows an unauthorized attacker to elevate privileges over a…

Browse all CWE-918 (Server-Side Request Forgery (SSRF)) vulnerabilities →