How severe is CVE-2018-5264?

CVE-2018-5264 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-5264 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-5264?

CVE-2018-5264 affects Ui Unifi Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-5264?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-5264 published?

CVE-2018-5264 was published on 2019-06-07 and last updated on 2026-06-17.

CVE-2018-5264

CVE-2018-5264 is a medium-severity vulnerability in Ui Unifi Firmware with a CVSS 3.x base score of 5.9. 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-284.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Ui Unifi Firmware
Published: 2019-06-07
Last modified: 2026-06-17

Description

Ubiquiti UniFi 52 devices, when Hotspot mode is used, allow remote attackers to bypass intended restrictions on "free time" Wi-Fi usage by sending a /guest/s/default/ request to obtain a cookie, and then using this cookie in a /guest/s/default/login request with the byfree parameter.

Frequently asked questions

What is CVE-2018-5264?: Ubiquiti UniFi 52 devices, when Hotspot mode is used, allow remote attackers to bypass intended restrictions on "free time" Wi-Fi usage by sending a /guest/s/default/ request to obtain a cookie, and then using this cookie in a /guest/s/default/login request with the byfree parameter.
How severe is CVE-2018-5264?: CVE-2018-5264 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-5264 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-5264?: CVE-2018-5264 affects Ui Unifi Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-5264?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-5264 published?: CVE-2018-5264 was published on 2019-06-07 and last updated on 2026-06-17.

References

https://www.red4sec.com/cve/unifi.txt

Affected products (1)

cpe:2.3:o:ui:unifi_firmware:-:*:*:*:*:*:*:*

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