ac18 firmware vulnerabilities and fixes

Recent CVEs affecting ac18 firmware, with upgrade or downgrade steps. 1 tracked.

Also searched as: ac18firmware.

ac18 firmware has 1 tracked vulnerability, 1 critical. A fixed release or vendor patch exists for 1. Most recent: 2026-04-27. Highest priority: CVE-2026-31255 (score 61/100).

• CVE-2026-31255 CRITICAL 9.8 MITIGATE A command injection vulnerability exists in Tenda AC18 V15.03.05.05_multi

FAQ

How do I fix ac18 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 ac18 firmware being exploited right now?

None of the tracked ac18 firmware CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which ac18 firmware CVE should I patch first?

CVE-2026-31255 currently ranks highest (61/100): A command injection vulnerability exists in Tenda AC18 V15.03.05.05_multi.

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