How severe is CVE-2015-9266?

CVE-2015-9266 has a CVSS 3.x base score of 9.8, 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-2015-9266 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 74% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-9266?

CVE-2015-9266 primarily affects Ui Airmax Ac Firmware. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-9266?

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.

When was CVE-2015-9266 published?

CVE-2015-9266 was published on 2018-09-05 and last updated on 2026-06-17.

CVE-2015-9266

CVE-2015-9266 is a critical-severity vulnerability in Ui Airmax Ac Firmware with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 74% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 74% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Ui Airmax Ac Firmware
Published: 2018-09-05
Last modified: 2026-06-17

Description

The web management interface of Ubiquiti airMAX, airFiber, airGateway and EdgeSwitch XP (formerly TOUGHSwitch) allows an unauthenticated attacker to upload and write arbitrary files using directory traversal techniques. An attacker can exploit this vulnerability to gain root privileges. This vulnerability is fixed in the following product versions (fixes released in July 2015, all prior versions are affected): airMAX AC 7.1.3; airMAX M (and airRouter) 5.6.2 XM/XW/TI, 5.5.11 XM/TI, and 5.5.10u2 XW; airGateway 1.1.5; airFiber AF24/AF24HD 2.2.1, AF5x 3.0.2.1, and AF5 2.2.1; airOS 4 XS2/XS5 4.0.4; and EdgeSwitch XP (formerly TOUGHSwitch) 1.3.2.

Frequently asked questions

What is CVE-2015-9266?: The web management interface of Ubiquiti airMAX, airFiber, airGateway and EdgeSwitch XP (formerly TOUGHSwitch) allows an unauthenticated attacker to upload and write arbitrary files using directory traversal techniques. An attacker can exploit this vulnerability to gain root privileges. This vulnerability is fixed in the following product versions (fixes released in July 2015, all prior versions are affected): airMAX AC 7.1.3; airMAX M (and airRouter) 5.6.2 XM/XW/TI, 5.5.11 XM/TI, and 5.5.10u2 XW; airGateway 1.1.5; airFiber AF24/AF24HD 2.2.1, AF5x 3.0.2.1, and AF5 2.2.1; airOS 4 XS2/XS5 4.0.4; and EdgeSwitch XP (formerly TOUGHSwitch) 1.3.2.
How severe is CVE-2015-9266?: CVE-2015-9266 has a CVSS 3.x base score of 9.8, 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-2015-9266 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 74% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-9266?: CVE-2015-9266 primarily affects Ui Airmax Ac Firmware. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-9266?: 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.
When was CVE-2015-9266 published?: CVE-2015-9266 was published on 2018-09-05 and last updated on 2026-06-17.

References

Affected products (12)

cpe:2.3:o:ui:airmax_ac_firmware:7.1.3:*:*:*:*:*:*:*
cpe:2.3:o:ui:airmax_m_xm_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ui:airmax_m_xw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ui:airmax_m_ti_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ui:airgateway_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ui:airfiber_af24_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ui:airfiber_af24hd_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ui:af5x_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ui:af5_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ubnt:airos_4_xs2:*:*:*:*:*:*:*:*
cpe:2.3:o:ubnt:airos_4_xs5:*:*:*:*:*:*:*:*
cpe:2.3:o:ubnt:edgeswitch_xp_firmware:*:*:*:*:*:*:*:*

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