How severe is CVE-2021-42847?

CVE-2021-42847 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-2021-42847 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 70% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-42847?

CVE-2021-42847 primarily affects Zohocorp Manageengine Adaudit Plus. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-42847?

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-2021-42847 published?

CVE-2021-42847 was published on 2021-11-11 and last updated on 2026-06-17.

CVE-2021-42847

CVE-2021-42847 is a critical-severity vulnerability in Zohocorp Manageengine Adaudit Plus with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 70% places it in the 99th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 70% (99th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Zohocorp Manageengine Adaudit Plus
Published: 2021-11-11
Last modified: 2026-06-17

Description

Zoho ManageEngine ADAudit Plus before 7006 allows attackers to write to, and execute, arbitrary files.

Frequently asked questions

What is CVE-2021-42847?: Zoho ManageEngine ADAudit Plus before 7006 allows attackers to write to, and execute, arbitrary files.
How severe is CVE-2021-42847?: CVE-2021-42847 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-2021-42847 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 70% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-42847?: CVE-2021-42847 primarily affects Zohocorp Manageengine Adaudit Plus. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-42847?: 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-2021-42847 published?: CVE-2021-42847 was published on 2021-11-11 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:a:zohocorp:manageengine_adaudit_plus:*:*:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adaudit_plus:7.0:-:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adaudit_plus:7.0:7000:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adaudit_plus:7.0:7002:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adaudit_plus:7.0:7003:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adaudit_plus:7.0:7004:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_adaudit_plus:7.0:7005:*:*:*:*:*:*

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