How severe is CVE-2021-31848?

CVE-2021-31848 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-31848 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-2021-31848?

CVE-2021-31848 affects Mcafee Data Loss Prevention Endpoint. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-31848?

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-2021-31848 published?

CVE-2021-31848 was published on 2021-11-01 and last updated on 2026-06-17.

CVE-2021-31848

CVE-2021-31848 is a high-severity vulnerability in Mcafee Data Loss Prevention Endpoint with a CVSS 3.x base score of 8.4. 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: High (CVSS 3.x base score 8.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Mcafee Data Loss Prevention Endpoint
Published: 2021-11-01
Last modified: 2026-06-17

Description

Cross site scripting (XSS) vulnerability in McAfee Data Loss Prevention (DLP) ePO extension prior to 11.7.100 allows a remote attacker to highjack an active DLP ePO administrator session by convincing the logged in administrator to click on a carefully crafted link in the case management part of the DLP ePO extension.

Frequently asked questions

What is CVE-2021-31848?: Cross site scripting (XSS) vulnerability in McAfee Data Loss Prevention (DLP) ePO extension prior to 11.7.100 allows a remote attacker to highjack an active DLP ePO administrator session by convincing the logged in administrator to click on a carefully crafted link in the case management part of the DLP ePO extension.
How severe is CVE-2021-31848?: CVE-2021-31848 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-31848 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-2021-31848?: CVE-2021-31848 affects Mcafee Data Loss Prevention Endpoint. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-31848?: 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-2021-31848 published?: CVE-2021-31848 was published on 2021-11-01 and last updated on 2026-06-17.

References

https://kc.mcafee.com/corporate/index?page=content&id=SB10371

Affected products (1)

cpe:2.3:a:mcafee:data_loss_prevention_endpoint:*:*:*:*:*:*:*:*

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