How severe is CVE-2021-42954?

CVE-2021-42954 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-42954 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-42954?

CVE-2021-42954 affects Zohocorp Manageengine Remote Access Plus. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-42954?

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

When was CVE-2021-42954 published?

CVE-2021-42954 was published on 2021-11-17 and last updated on 2026-06-17.

CVE-2021-42954

CVE-2021-42954 is a high-severity vulnerability in Zohocorp Manageengine Remote Access Plus with a CVSS 3.x base score of 7.8. 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-732.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-732
Affected product: Zohocorp Manageengine Remote Access Plus
Published: 2021-11-17
Last modified: 2026-06-17

Description

Zoho Remote Access Plus Server Windows Desktop Binary fixed from 10.1.2121.1 is affected by incorrect access control. The installation directory is vulnerable to weak file permissions by allowing full control for Windows Everyone user group (non-admin or any guest users), thereby allowing privilege escalation, unauthorized password reset, stealing of sensitive data, access to credentials in plaintext, access to registry values, tampering with configuration files, etc.

Frequently asked questions

What is CVE-2021-42954?: Zoho Remote Access Plus Server Windows Desktop Binary fixed from 10.1.2121.1 is affected by incorrect access control. The installation directory is vulnerable to weak file permissions by allowing full control for Windows Everyone user group (non-admin or any guest users), thereby allowing privilege escalation, unauthorized password reset, stealing of sensitive data, access to credentials in plaintext, access to registry values, tampering with configuration files, etc.
How severe is CVE-2021-42954?: CVE-2021-42954 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-42954 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-42954?: CVE-2021-42954 affects Zohocorp Manageengine Remote Access Plus. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-42954?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-42954 published?: CVE-2021-42954 was published on 2021-11-17 and last updated on 2026-06-17.

References

https://medium.com/nestedif/vulnerability-disclosure-improper-filesystem-permission-misconfigured-acls-zoho-r-a-p-56e195464b51

Affected products (1)

cpe:2.3:a:zohocorp:manageengine_remote_access_plus:*:*:*:*:*:*:*:*

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