CVE-2026-55119: A malicious actor with access to the network and low privileges could exploit an Improper Access Control vulne

Q: How do I fix CVE-2026-55119?

unifi talk application: upgrade to 5.2.2. Exact commands for each OS are on this page.

Q: Is CVE-2026-55119 being exploited?

CVE-2026-55119 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-55119 affect?

CVE-2026-55119 affects unifi talk application. Severity is high (CVSS 8.1). A malicious actor with access to the network and low privileges could exploit an Improper Access Control vulnerability found in UniFi Talk Application to escalate privileges within the UniFi Talk Application.

Routine

HIGH 8.1UPGRADE

CVE-2026-55119 is a high-severity flaw (CVSS 8.1) affecting unifi talk application. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A malicious actor with access to the network and low privileges could exploit an Improper Access Control vulnerability found in UniFi Talk Application to escalate privileges within the UniFi Talk Application.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-284
Published	2026-07-02
Last modified	2026-10-25

Publisher (CNA): HackerOne · Vendor: ui

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-02 15:17 UTCPublished CVE record published
2026-10-25 21:10 UTCUpdated Record last modified

ui unifi talk application UPGRADE

Affected: < 5.2.2

Fixed in: 5.2.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy unifi-talk-application || rpm -q unifi-talk-application || unifi-talk-application --version

2. UPGRADE to 5.2.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade unifi-talk-application

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade unifi-talk-application

Note

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

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-2026-55119?

unifi talk application: upgrade to 5.2.2. Exact commands for each OS are on this page.

Is CVE-2026-55119 being exploited?

CVE-2026-55119 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-2026-55119 affect?

CVE-2026-55119 affects unifi talk application. Severity is high (CVSS 8.1). A malicious actor with access to the network and low privileges could exploit an Improper Access Control vulnerability found in UniFi Talk Application to escalate privileges within the UniFi Talk Application.

How urgent is CVE-2026-55119?

Priority 36/100. High severity

Software pages

Ubiquiti vulnerabilities

Related CVEs

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CVE-2026-55113 HIGH 7.5 UPGRADE A malicious actor with access to the network could exploit a Server-Side Request Forgery (SSRF) vulnerability

References

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