CVE-2021-31848Network attack vector

Administrator session hijacking via reflected cross-site scripting

Published Nov 1, 2021 · Updated Aug 3, 2024

Reflected XSS in McAfee Data Loss Prevention ePO Extension before 11.7.100 allows remote attackers to hijack an administrator session. McAfee has not published the affected parameter or the escaping failure in the case-management request path. Exploitation requires a logged-in DLP ePO administrator to follow the crafted link, after which injected script runs in that administrative session.

CVSS severity8.4
High
EPSS probability0.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in McAfee Data Loss Prevention ePO Extension before 11.7.100 allows remote attackers to hijack an administrator session. McAfee has not published the affected parameter or the escaping failure in the case-management request path. Exploitation requires a logged-in DLP ePO administrator to follow the crafted link, after which injected script runs in that administrative session.

The record

CVE
CVE-2021-31848
Published
Nov 1, 2021
Updated
Aug 3, 2024
Vendor
McAfee
Product
McAfee Data Loss Prevention ePO Extension
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 1, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <11.6.400
  2. Affected versionversion=unspecified <11.7.100

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

McAfee · McAfee Data Loss Prevention ePO Extensionversion=unspecified <11.6.400; version=unspecified <11.7.100

Published CVSS scores

3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
8.4TrellixCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001User Execution: Malicious Link

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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