How severe is CVE-2026-22558?

CVE-2026-22558 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-22558 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-22558?

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

Does CVE-2026-22558 have an EU (EUVD) identifier?

Yes. CVE-2026-22558 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13104.

When was CVE-2026-22558 published?

CVE-2026-22558 was published on 2026-03-19 and last updated on 2026-06-17.

CVE-2026-22558

CVE-2026-22558 is a high-severity vulnerability with a CVSS 3.x base score of 7.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-943.

Key facts

Severity: High (CVSS 3.x base score 7.7)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-13104
Weakness: CWE-943
Published: 2026-03-19
Last modified: 2026-06-17

Description

An Authenticated NoSQL Injection vulnerability found in UniFi Network Application could allow a malicious actor with authenticated access to the network to escalate privileges.

Frequently asked questions

What is CVE-2026-22558?: An Authenticated NoSQL Injection vulnerability found in UniFi Network Application could allow a malicious actor with authenticated access to the network to escalate privileges.
How severe is CVE-2026-22558?: CVE-2026-22558 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-22558 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-22558?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-22558 have an EU (EUVD) identifier?: Yes. CVE-2026-22558 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13104.
When was CVE-2026-22558 published?: CVE-2026-22558 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

Other CWE-943 vulnerabilities

CVE-2026-40141 — Critical (CVSS 9.9): A high-severity vulnerability exists in a web application component of BeyondTrust Remote Support and Privileged Remote…
CVE-2024-4872 — Critical (CVSS 9.9): A vulnerability exists in the query validation of the MicroSCADA Pro/X SYS600 product. If exploited this could allow an…
CVE-2026-41274 — Critical (CVSS 9.8): Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, the…
CVE-2026-40351 — Critical (CVSS 9.8): FastGPT is an AI Agent building platform. In versions prior to 4.14.9.5, the password-based login endpoint uses…
CVE-2026-32248 — Critical (CVSS 9.8): Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to…
CVE-2026-29793 — Critical (CVSS 9.8): Feathersjs is a framework for creating web APIs and real-time applications with TypeScript or JavaScript. From 5.0.0…

Browse all CWE-943 vulnerabilities →