rt-ac66u b1 firmware vulnerabilities and fixes

Recent CVEs affecting rt-ac66u b1 firmware, with upgrade or downgrade steps. 3 tracked.

Also searched as: rt ac66u b1 firmware, rt-ac66ub1firmware.

rt-ac66u b1 firmware has 3 tracked vulnerabilities, 2 critical. A fixed release or vendor patch exists for 2. Most recent: 2023-08-08. Highest priority: CVE-2018-18320 (score 67/100).

• CVE-2023-39086 HIGH 7.5 MITIGATE ASUS RT-AC66U B1 3.0.0.4.286_51665 was discovered to transmit sensitive information in cleartext.
• CVE-2018-18320 CRITICAL 9.8 UPGRADE UPGRADE An issue was discovered in the Merlin.PHP component 0.6.6 for Asuswrt-Merlin devices
• CVE-2018-18319 CRITICAL 9.8 UPGRADE UPGRADE An issue was discovered in the Merlin.PHP component 0.6.6 for Asuswrt-Merlin devices

FAQ

How do I fix rt-ac66u b1 firmware vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is rt-ac66u b1 firmware being exploited right now?

None of the tracked rt-ac66u b1 firmware CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which rt-ac66u b1 firmware CVE should I patch first?

CVE-2018-18320 currently ranks highest (67/100): An issue was discovered in the Merlin.PHP component 0.6.6 for Asuswrt-Merlin devices.

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