RT-AX52
Actively updated well evidenced
firmware is arriving about as often as it always has
194 days since the last release against a median gap of 136 (1.4x)
- Last firmware
- 20 March 2026 (6 months ago)
- Releases seen
- 7
- Update rhythm
- about every 4 months
- Support observed
- ≥2 years
- Vendor's promise
- no support period we can evaluate
- Patch latency
- not measurable — its changelogs name no CVE ids
Firmware history
-
3.0.0.4.388_34015 20 March 2026
Release notes — disclosure 0.34
Security Enhancements:- Strengthened input sanitization mechanism.- Enhanced system API validation for stronger protection consistency.- Strengthened command handling and system resource access controls.- Improved system logging and security event recording mechanisms.
Archived page, fetched 29 September 2026
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3.0.0.4.388_33965 20 October 2025
Release notes — disclosure 0.37
- Enhanced system stability.- Enhanced input validation and refactored legacy string handling routines to ensure robust memory management.- Implemented comprehensive validation and expanded command filtering in the web history API.- Strengthened input validation and directory handling in the VPN configuration upload interface.- Fixed an issue that allowed certain user settings to be bypassed, improving overall user control and protection.
Archived page, fetched 29 September 2026
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3.0.0.4.388_33950 25 August 2025
Release notes — disclosure 0.45
Important: After installing this firmware, we strongly recommend performing a factory-default reset to activate every new security adjustment.Security Enhancements- Password Policy Upgrade – Minimum of 10 characters, including at least one letter, one digit, and one special character; disallows consecutive identical characters; hardens defense against brute-force attacks.- HTTPS on 8443 – Management interface now served over TLS by default.- UPnP Disabled – Universal Plug and Play starts in the off state for reduced surface exposure.- Authentication Logic Refactor – Removed redundant code paths for a lean sign-in flow.- Memory Safety Guard (CWE-476) – Introduced null-reference protections across critical services.- Enhanced IPsec Parameter Validation – The existing input checks have been hardened.- Data Exposure Mitigation (CWE-200) – Reinforced controls on sensitive pathways.- Detailed Audit Trails – Expanded logging within the authentication module.System Improvements- Connection Stability – Core algorithms refined for steadier links.- Scheduling Accuracy – Timed tasks execute reliably under PPPoE, PPTP and L2TP WAN modes.- Client List Maintenance – Resolved an issue that prevented offline devices from being removed from the client list
Archived page, fetched 29 September 2026
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3.0.0.4.388_33911 25 April 2025
Release notes — disclosure 0.31
Fixed the IPTV compatibility issue for Now TV.
Archived page, fetched 29 September 2026
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3.0.0.4.388_33903 4 March 2025
Release notes — disclosure 0.49
1. Fixed the UI issue in Chrome.2. Fixed client binding issues in Mesh scenarios.3. Enhanced input parameter handling techniques to improve data processing stability and system security.4. Enhance system access control mechanisms.
Archived page, fetched 29 September 2026
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3.0.0.4.388_32683 27 May 2024
Release notes — disclosure 0.30
- Improve Wirelss compatibility
Archived page, fetched 29 September 2026
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3.0.0.4.388_32682 30 October 2023
Release notes — disclosure 0.30
Initial firmware release
Archived page, fetched 29 September 2026
Evidence
2 archived pages sit behind this record, the earliest read on 2 August 2026. Everything above was read from them, and each is kept byte for byte so it can be checked after the vendor edits the original.
Identifiers: marketing_name RT-AX52 · openwrt_id asus_rt-ax52
Judged by lifecycle-1 on 30 September 2026.
How these verdicts are computed.