What’s Vulnerable › Vulnerabilities

CVE-2015-9266: Ubiquiti airOS HTTP(S) unauthenticated arbitrary file upload

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 74.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-09-05 · updated 2026-06-17
• Weakness: CWE-22

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.

Affected products

• Ubnt Airos 4 Xs2: before 4.0.4 — fixed in 4.0.4
• Ubnt Airos 4 Xs5: before 4.0.4 — fixed in 4.0.4
• Ubnt Edgeswitch Xp Firmware: before 1.3.2 — fixed in 1.3.2
• Ui Af5 Firmware: before 2.2.1 — fixed in 2.2.1
• Ui Af5X Firmware: before 3.0.2.1 — fixed in 3.0.2.1
• Ui Airfiber Af24 Firmware: before 2.2.1 — fixed in 2.2.1
• Ui Airfiber Af24Hd Firmware: before 2.2.1 — fixed in 2.2.1
• Ui Airgateway Firmware: before 1.15 — fixed in 1.15
• Ui Airmax Ac Firmware: 7.1.3
• Ui Airmax M Ti Firmware: before 5.6.2 — fixed in 5.6.2
• Ui Airmax M Xm Firmware: before 5.6.2 — fixed in 5.6.2
• Ui Airmax M Xw Firmware: before 5.6.2 — fixed in 5.6.2

How to fix

Upgrade to a fixed version: Ubnt Airos 4 Xs2 4.0.4; Ubnt Airos 4 Xs5 4.0.4; Ubnt Edgeswitch Xp Firmware 1.3.2; Ui Af5 Firmware 2.2.1; Ui Af5X Firmware 3.0.2.1; Ui Airfiber Af24 Firmware 2.2.1; Ui Airfiber Af24Hd Firmware 2.2.1; Ui Airgateway Firmware 1.15; Ui Airmax M Ti Firmware 5.6.2; Ui Airmax M Xm Firmware 5.6.2; Ui Airmax M Xw Firmware 5.6.2. Check the vendor advisory for mitigations.

References

• https://community.ubnt.com/t5/airMAX-General-Discussion/Virus-attack-URGENT-UBNT/td-p/1562940
• https://community.ubnt.com/t5/airMAX-Updates-Blog/Important-Security-Notice-and-airOS-5-6-5-Release/ba-p/1565949
• https://community.ubnt.com/t5/airMAX-Updates-Blog/Security-Release-for-airMAX-TOUGHSwitch-and-airGateway-Released/ba-p/1300494
• https://hackerone.com/reports/73480
• https://www.exploit-db.com/exploits/39701/
• https://www.exploit-db.com/exploits/39853/
• https://www.rapid7.com/db/modules/exploit/linux/ssh/ubiquiti_airos_file_upload
• https://community.ubnt.com/t5/airMAX-General-Discussion/Virus-attack-URGENT-UBNT/td-p/1562940
• https://community.ubnt.com/t5/airMAX-Updates-Blog/Important-Security-Notice-and-airOS-5-6-5-Release/ba-p/1565949
• https://community.ubnt.com/t5/airMAX-Updates-Blog/Security-Release-for-airMAX-TOUGHSwitch-and-airGateway-Released/ba-p/1300494
• https://hackerone.com/reports/73480
• https://www.exploit-db.com/exploits/39701/

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