How severe is CVE-2026-22557?

CVE-2026-22557 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-22557 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 28% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-22557?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-22557 have an EU (EUVD) identifier?

Yes. CVE-2026-22557 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13101.

When was CVE-2026-22557 published?

CVE-2026-22557 was published on 2026-03-19 and last updated on 2026-06-17.

CVE-2026-22557

CVE-2026-22557 is a critical-severity vulnerability with a CVSS 3.x base score of 10.0. Its EPSS exploit-prediction score of 28% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-22.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 28% (98th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-13101
Weakness: CWE-22
Published: 2026-03-19
Last modified: 2026-06-17

Description

A malicious actor with access to the network could exploit a Path Traversal vulnerability found in the UniFi Network Application to access files on the underlying system that could be manipulated to access an underlying account.

Frequently asked questions

What is CVE-2026-22557?: A malicious actor with access to the network could exploit a Path Traversal vulnerability found in the UniFi Network Application to access files on the underlying system that could be manipulated to access an underlying account.
How severe is CVE-2026-22557?: CVE-2026-22557 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-22557 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 28% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-22557?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-22557 have an EU (EUVD) identifier?: Yes. CVE-2026-22557 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13101.
When was CVE-2026-22557 published?: CVE-2026-22557 was published on 2026-03-19 and last updated on 2026-06-17.

References

https://community.ui.com/releases/Security-Advisory-Bulletin-062-062/c29719c0-405e-4d4a-8f26-e343e99f931b

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