CVE-2026-22080
Credentials exposed via reversible Base64 in Tenda router web UI on LAN.
Is CVE-2026-22080 being exploited?
Not confirmed. CVE-2026-22080 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.12% probability of exploitation in the next 30 days.
How severe is CVE-2026-22080?
CVE-2026-22080 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-22080?
Not known from our data. No patch reference has been recorded for CVE-2026-22080, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-22080 affect?
CVE-2026-22080 affects Tenda 300Mbps Wireless Router F3, Tenda N300 Easy Setup Router. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-22080?
Update firmware when released; disable remote admin; limit LAN access.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
LAN attacker can capture/decode credentials from traffic and gain unauthorized router access.
Patch when possible
- affectedF3 v3.0 Firmware V12.01.01.41
- affectedF3 v3.0 Firmware V12.01.01.42
- affectedF3 v3.0 Firmware V12.01.01.48
- affectedF3 v3.0 Firmware V12.01.01.52
- affectedF3 v3.0 Firmware V12.01.01.55
- affectedF3 v4.0 Firmware V03.03.01.40
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.