RT-AX55
No end date
No end date announced yet . estimated end March 2028
Minimum support period for Singapore: the maker promised security updates for products sold in Singapore until at least February 28, 2025. That minimum has passed; it was not an announced end date.
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Dates and sources
Dates and sources
SourceASUS (opens in a new tab)checked October 15, 2026
Key dates
- Release
- By November 2024 at the latestThe maker gives no launch date. This is the month of the first update: the launch was in it or before.
- Last update
- September 4, 2026 · version 3.0.0.4.386_53370
- End of support
- No end date
- Estimated end
- March 2028 · estimateMarked “Likely ended (estimate)” if no update by then
- Minimum support for Singapore
- February 28, 2025 · vendor notice
Firmware updates
Updates I found on the maker’s pages, from June 2025 to September 2026. I read the notes of 6 of these updates and found security changes in 4.
- 3.0.0.4.386_53370 Security, new features or improvements
- 3.0.0.4.386_53329 Security
- 3.0.0.4.386_53327 Security
- 3.0.0.4.386_53297 Bug fixes, new features or improvements
- 3.0.0.4.386_53266 New features or improvements
- 3.0.0.4.386_53244 Security, new features or improvements
Record
Last advisory with a fix: 1 fixed
ASUS RT-AX55 firmware 3.0.0.4.386_52332 · checked November 13, 2026
- as of
Fixes received: estimated 8
Each fix below rests partly on our inference, not only on the maker's word. By this estimate, the newest firmware we know for this model has them. Not counted in the other numbers on this page.
Show the list: estimated fixes
Firmware 3.0.0.4.386_52303 or later
Source: asus.com (opens in a new tab) · checked November 13, 2026
Basis: The maker lists this model for the CVEs below but doesn't name the fixed firmware for it. The version comes from a CVE record by another organisation or from the maker's download page.
- CVE-2024-0401 NVD CVE-2024-0401 (opens in a new tab)
Firmware built or released on or after November 3, 2023
Source: asus.com (opens in a new tab) · checked November 13, 2026
Basis: The source gives a date instead of a firmware version, so we assumed this model's firmware from that date on has the fix.
- CVE-2023-41348 NVD CVE-2023-41348 (opens in a new tab)
- CVE-2023-41347 NVD CVE-2023-41347 (opens in a new tab)
- CVE-2023-41345 NVD CVE-2023-41345 (opens in a new tab)
- CVE-2023-41346 NVD CVE-2023-41346 (opens in a new tab)
Firmware built or released on or after September 12, 2023
Source: asus.com (opens in a new tab) · checked November 13, 2026
- CVE-2023-39238 NVD CVE-2023-39238 (opens in a new tab)
- CVE-2023-39240 NVD CVE-2023-39240 (opens in a new tab)
- CVE-2023-39239 NVD CVE-2023-39239 (opens in a new tab)
Sources
- ASUS (opens in a new tab) Security bulletinlast verified October 15, 2026
- ASUS (opens in a new tab) Firmware downloadslast verified October 15, 2026
- ASUS (opens in a new tab) Support pagelast verified October 14, 2026
- Vulnerability data: vendor security bulletins, CISA Known Exploited Vulnerabilities catalog, NVD, FIRST EPSSas of November 13, 2026 · Data sources
What to do now
- Open the router's admin page or app and install the latest firmware.
- Turn on automatic firmware updates if the router offers them.
- Check that firmware 3.0.0.4.386_53370 or later is installed.
- Change the default admin password.
- Turn off remote (WAN) management, WPS and UPnP unless you need them.
- Use WPA2 or WPA3 for Wi-Fi with a long passphrase.
Other ASUS routers
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|---|---|---|
| Ended · 5 | ||
| RT-AC1900P, ended 6 months ago | ||
| RT-AX56U, ended 6 months ago, Estimate · Released 2019-12 | ||
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| RT-AC88U, ended 1 year 7 months ago | ||
| RT-AC3100, ended 1 year 8 months ago | ||
| No end date · 3 | ||
| RT-AX57, 1 year 4 months left, Estimate | ||
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41 more
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| RT-AC86U, ended 6 months ago | ||
| RT-AX56U, ended 6 months ago, Estimate · Released 2019-12 | ||
| RT-AX88U, ended 6 months ago · Released 2018-07 | ||
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| RT-AC88U, ended 1 year 7 months ago | ||
| RT-AC3100, ended 1 year 8 months ago | ||
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