CVE-2026-55115: A malicious actor with access to the network and low privileges could exploit a Server-Side Request Forgery (S

Q: How do I fix CVE-2026-55115?

unifi protect: upgrade to 7.1.83. Exact commands for each OS are on this page.

Q: Is CVE-2026-55115 being exploited?

CVE-2026-55115 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-2026-55115 affect?

CVE-2026-55115 affects unifi protect. Severity is critical (CVSS 9.9). A malicious actor with access to the network and low privileges could exploit a Server-Side Request Forgery (SSRF) in UniFi Protect Application to escalate privileges on the host device.

Q: How urgent is CVE-2026-55115?

Priority 45/100. Critical severity

This month

CRITICAL 9.9UPGRADE

CVE-2026-55115 is a critical-severity flaw (CVSS 9.9) affecting unifi protect. 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 a Server-Side Request Forgery (SSRF) in UniFi Protect Application to escalate privileges on the host device.

Why this priority

Critical severity

A fixed release or distro patch exists.

Risk facts

CVSS score	9.9 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 60%)
CISA exploited list	No
Weakness	CWE-918
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 protect UPGRADE

Affected: < 7.1.83

Fixed in: 7.1.83

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy unifi-protect || rpm -q unifi-protect || unifi-protect --version

2. UPGRADE to 7.1.83 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade unifi-protect

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade unifi-protect

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-2026-55115?

unifi protect: upgrade to 7.1.83. Exact commands for each OS are on this page.

Is CVE-2026-55115 being exploited?

CVE-2026-55115 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-2026-55115 affect?

CVE-2026-55115 affects unifi protect. Severity is critical (CVSS 9.9). A malicious actor with access to the network and low privileges could exploit a Server-Side Request Forgery (SSRF) in UniFi Protect Application to escalate privileges on the host device.

How urgent is CVE-2026-55115?

Priority 45/100. Critical severity

Software pages

Ubiquiti vulnerabilities

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References

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