How severe is CVE-2025-23123?

CVE-2025-23123 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-2025-23123 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-23123?

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-2025-23123 have an EU (EUVD) identifier?

Yes. CVE-2025-23123 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-15707.

When was CVE-2025-23123 published?

CVE-2025-23123 was published on 2025-05-19 and last updated on 2026-06-17.

CVE-2025-23123

CVE-2025-23123 is a critical-severity vulnerability with a CVSS 3.x base score of 10.0. 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-122.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-15707
Weakness: CWE-122
Published: 2025-05-19
Last modified: 2026-06-17

Description

A malicious actor with access to the management network could execute a remote code execution (RCE) by exploiting a heap buffer overflow vulnerability in the UniFi Protect Cameras (Version 4.75.43 and earlier) firmware.

Frequently asked questions

What is CVE-2025-23123?: A malicious actor with access to the management network could execute a remote code execution (RCE) by exploiting a heap buffer overflow vulnerability in the UniFi Protect Cameras (Version 4.75.43 and earlier) firmware.
How severe is CVE-2025-23123?: CVE-2025-23123 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-2025-23123 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-23123?: 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-2025-23123 have an EU (EUVD) identifier?: Yes. CVE-2025-23123 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-15707.
When was CVE-2025-23123 published?: CVE-2025-23123 was published on 2025-05-19 and last updated on 2026-06-17.

References

https://community.ui.com/releases/Security-Advisory-Bulletin-047-047/cef86c37-7421-44fd-b251-84e76475a5bc

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