CVE-2023-0400: The protection bypass vulnerability in DLP for Windows 11.9.x is addressed in version 11.10.0

Routine

MEDIUM 5.9UPGRADE

CVE-2023-0400 is a medium-severity flaw (CVSS 5.9) affecting data loss prevention. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The protection bypass vulnerability in DLP for Windows 11.9.x is addressed in version 11.10.0. This allowed a local user to bypass DLP controls when uploading sensitive data from a mapped drive into a web email client. Loading from a local driver was correctly prevented. Versions prior to 11.9 correctly detected and blocked the attempted upload of sensitive data.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.4% (top 64%)
CISA exploited list	No
Weakness	CWE-670, CWE-427
Published	2023-02-02
Last modified	2026-06-17

Publisher (CNA): Trellix · Vendor: trellix

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-02-02 09:15 UTCPublished CVE record published
2026-06-17 05:25 UTCUpdated Record last modified

trellix data loss prevention UPGRADE

Affected: >= 11.9.0 and < 11.10.0

Fixed in: 11.10.0

Safe to downgrade to: a release before 11.9.0

1. Check installed version

apt-cache policy data-loss-prevention || rpm -q data-loss-prevention || data-loss-prevention --version

2. UPGRADE to 11.10.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade data-loss-prevention

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade data-loss-prevention

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 11.9.0 (Debian / Ubuntu)

apt-cache madison data-loss-prevention sudo apt install data-loss-prevention=<VERSION_BEFORE_11.9.0> sudo apt-mark hold data-loss-prevention

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list data-loss-prevention sudo dnf downgrade data-loss-prevention-<VERSION_BEFORE_11.9.0> sudo dnf versionlock add data-loss-prevention

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-0400?

data loss prevention: upgrade to 11.10.0. Exact commands for each OS are on this page.

Is CVE-2023-0400 being exploited?

CVE-2023-0400 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-0400 affect?

CVE-2023-0400 affects data loss prevention. Severity is medium (CVSS 5.9). The protection bypass vulnerability in DLP for Windows 11.9.x is addressed in version 11.10.0. This allowed a local user to bypass DLP controls when uploading sensitive data from a mapped drive into a web email client. Loading from a local

How urgent is CVE-2023-0400?

Priority 30/100. No elevated risk signals yet.

Software pages

Windows vulnerabilities

Related CVEs

CVE-2023-4814 HIGH 7.1 DOWNGRADE A Privilege escalation vulnerability exists in Trellix Windows DLP endpoint for windows which can be abused t
CVE-2022-1700 HIGH 7.5 UPGRADE UPGRADE Improper Restriction of XML External Entity Reference ('XXE') vulnerability in the Policy Engine of Forcepoint
CVE-2021-4088 HIGH 8.4 UPGRADE SQL injection vulnerability in Data Loss Protection (DLP) ePO extension 11.8.x prior to 11.8.100, 11.7.x prior
CVE-2021-31832 MEDIUM 5.2 UPGRADE Improper Neutralization of Input in the ePO administrator extension for McAfee Data Loss Prevention (DLP) Endp
CVE-2020-7346 HIGH 7.8 UPGRADE Privilege Escalation vulnerability in McAfee Data Loss Prevention (DLP) for Windows prior to 11.6.100 allows a

References

← Back to latest CVEs