How severe is CVE-2021-31851?

CVE-2021-31851 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-31851 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-31851?

CVE-2021-31851 affects Mcafee Policy Auditor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-31851?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-31851 published?

CVE-2021-31851 was published on 2021-11-23 and last updated on 2026-06-17.

CVE-2021-31851

CVE-2021-31851 is a medium-severity vulnerability in Mcafee Policy Auditor with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Mcafee Policy Auditor
Published: 2021-11-23
Last modified: 2026-06-17

Description

A Reflected Cross-Site Scripting vulnerability in McAfee Policy Auditor prior to 6.5.2 allows a remote unauthenticated attacker to inject arbitrary web script or HTML via the profileNodeID request parameters. The malicious script is reflected unmodified into the Policy Auditor web-based interface which could lead to the extraction of end user session token or login credentials. These may be used to access additional security-critical applications or conduct arbitrary cross-domain requests.

Frequently asked questions

What is CVE-2021-31851?: A Reflected Cross-Site Scripting vulnerability in McAfee Policy Auditor prior to 6.5.2 allows a remote unauthenticated attacker to inject arbitrary web script or HTML via the profileNodeID request parameters. The malicious script is reflected unmodified into the Policy Auditor web-based interface which could lead to the extraction of end user session token or login credentials. These may be used to access additional security-critical applications or conduct arbitrary cross-domain requests.
How severe is CVE-2021-31851?: CVE-2021-31851 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-31851 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-31851?: CVE-2021-31851 affects Mcafee Policy Auditor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-31851?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-31851 published?: CVE-2021-31851 was published on 2021-11-23 and last updated on 2026-06-17.

References

https://kc.mcafee.com/corporate/index?page=content&id=SB10372

Affected products (1)

cpe:2.3:a:mcafee:policy_auditor:*:*:*:*:*:*:*:*

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