How severe is CVE-2021-44675?

CVE-2021-44675 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-2021-44675 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-44675?

CVE-2021-44675 primarily affects Zohocorp Manageengine Servicedesk Plus Msp. In total, 35 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-44675?

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-2021-44675 published?

CVE-2021-44675 was published on 2021-12-20 and last updated on 2026-06-17.

CVE-2021-44675

CVE-2021-44675 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-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Zohocorp Manageengine Servicedesk Plus Msp
Published: 2021-12-20
Last modified: 2026-06-17

Description

Zoho ManageEngine ServiceDesk Plus MSP before 10.5 Build 10534 is vulnerable to unauthenticated remote code execution due to a filter bypass in which authentication is not required.

Frequently asked questions

What is CVE-2021-44675?: Zoho ManageEngine ServiceDesk Plus MSP before 10.5 Build 10534 is vulnerable to unauthenticated remote code execution due to a filter bypass in which authentication is not required.
How severe is CVE-2021-44675?: CVE-2021-44675 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-2021-44675 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-44675?: CVE-2021-44675 primarily affects Zohocorp Manageengine Servicedesk Plus Msp. In total, 35 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-44675?: 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-2021-44675 published?: CVE-2021-44675 was published on 2021-12-20 and last updated on 2026-06-17.

References

https://pitstop.manageengine.com/portal/en/community/topic/security-advisory-authentication-bypass-vulnerabilities-in-servicedesk-plus-msp-that-could-lead-to-remote-code-execution

Affected products (35)

cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10521:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10522:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10523:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10524:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10525:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10526:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10527:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10528:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10529:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10530:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10531:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10532:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10533:*:*:*:*:*:*

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Other CWE-287 (Improper Authentication) vulnerabilities

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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…

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