CVE-2026-18084: Improper Neutralization of Input During Web Page Generation vulnerability in BlackBerry UEM Management Console

Routine

MEDIUM 6.1DOWNGRADE

CVE-2026-18084 is a medium-severity flaw (CVSS 6.1) affecting unified endpoint manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper Neutralization of Input During Web Page Generation vulnerability in BlackBerry UEM Management Console of BlackBerry UEM allows Cross-Site Scripting (XSS). This issue affects UEM: 12.23.0 QF8 or earlier.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 84%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-07-28
Last modified	2026-10-24

Publisher (CNA): BlackBerry · Vendor: blackberry

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-28 17:16 UTCPublished CVE record published
2026-10-24 13:10 UTCUpdated Record last modified

blackberry unified endpoint manager DOWNGRADE

Affected: 12.23.0 · 12.23.0 quick_fix1 · 12.23.0 quick_fix2 · 12.23.0 quick_fix3 · 12.23.0 quick_fix4 · 12.23.0 quick_fix5 · 12.23.0 quick_fix6 · 12.23.0 quick_fix7

Fixed in: no fixed release known

Safe to downgrade to: a release before 12.22.1

1. Check installed version

apt-cache policy unified-endpoint-manager || rpm -q unified-endpoint-manager || unified-endpoint-manager --version

2. No fixed release: DOWNGRADE to a release before 12.22.1 (Debian / Ubuntu)

apt-cache madison unified-endpoint-manager sudo apt install unified-endpoint-manager=<VERSION_BEFORE_12.22.1> sudo apt-mark hold unified-endpoint-manager

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list unified-endpoint-manager sudo dnf downgrade unified-endpoint-manager-<VERSION_BEFORE_12.22.1> sudo dnf versionlock add unified-endpoint-manager

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-2026-18084?

unified endpoint manager: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-18084 being exploited?

CVE-2026-18084 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-2026-18084 affect?

CVE-2026-18084 affects unified endpoint manager. Severity is medium (CVSS 6.1). Improper Neutralization of Input During Web Page Generation vulnerability in BlackBerry UEM Management Console of BlackBerry UEM allows Cross-Site Scripting (XSS). This issue affects UEM: 12.23.0 QF8 or earlier.

How urgent is CVE-2026-18084?

Priority 25/100. No elevated risk signals yet.

Related CVEs

CVE-2026-18085 MEDIUM 6.9 DOWNGRADE An Improper Input Validation in the BlackBerry UEM Management Console of BlackBerry UEM 12.23.0 QF8 and earlie

References

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