Archer C20 v5
Actively updated well evidenced
firmware is arriving about as often as it always has
161 days since the last release against a median gap of 417 (0.4x)
- Last firmware
- 22 April 2026 (5 months ago)
- Releases seen
- 8
- Update rhythm
- about every 1 year
- Support observed
- ≥7 years
- Vendor's promise
- no support period we can evaluate
- Patch latency
- not measurable — its changelogs name no CVE ids
Which one do I have?
TP-Link ships this model in more than one hardware revision, and they do not share firmware. The revision is printed on the label on the underside, usually after the model — Ver 1.0, V4.6. Getting it wrong is the easiest way to read the wrong answer here.
- Archer C20 v1 Not enough evidence 0 releases
- Archer C20 v4 (US) Slowing down 3 releases
- Archer C20 v5.6 (CPI) Not enough evidence 1 releases
- Archer C20 v5.6 (US) Slowing down 3 releases
- Archer C20 v5.8 (US) Slowing down 3 releases
- Archer C20 v6.46 (CPI) Actively updated 3 releases
- Archer C20 v6.6 (CPI) Actively updated 3 releases
Firmware history
-
Archer C20(US)_V5_260419 22 April 2026
Release notes — disclosure 0.06
Modifications and Bug Fixes Improved overall security.
Archived page, fetched 29 September 2026
-
Archer C20(US)_V5_241231 21 January 2025
Release notes — disclosure 0.30
Enhance device security.
Archived page, fetched 29 September 2026
-
Archer C20(US)_V5_230924 1 December 2023
Release notes — disclosure 0.44
Modifications: Enhanced device security. Fixed the bug that prevented AX201 network cards from connecting to the 5GHz networks on Windows 11. Fixed the bug that occasionally caused disconnection issues for specific smartphone brands.
Archived page, fetched 29 September 2026
-
Archer C20(US)_V5_221028 8 August 2023
Release notes — disclosure 0.54
Modifications and Bug Fixes 1. Fixed the bug that the network cannot be automatically restored after PPPoE connection is disconnected; 2. Enhanced PPPoEv6 dial-up compatibility; 3. Fixed the Ping command error after the Router WAN is configured with a static IP address; 4. Update the IPVT profile; 5. Enhance device security.
Archived page, fetched 29 September 2026
-
Archer C20(US)_V5_201214 27 January 2021
Release notes — disclosure 0.25
Modifications and Bug Fixes: 1. Fix the XSS vulnerability in Hostname display to enhance device security.
Archived page, fetched 29 September 2026
-
Archer C20(US)_V5_200915 10 October 2020
Release notes — disclosure 0.41
Modifications and Bug Fixes: 1. New Features/Enhancement: (1) Optimized 2.4G ping delay problem. 2. Bug Fixed: (1) Fixed the bug that the time will not automatically update while dialing up. (2) Fixed the problem of failure to restore the factory when remote & PPP dialing is enabled on https. (3) Fixed the bug that the SSID information of MAC.bin cannot take effect normally in some special cases.
Archived page, fetched 29 September 2026
-
Archer C20(US)_V5_200526 12 June 2020
Release notes — disclosure 0.44
New Features/Enhancement: 1. Add the Agile Config function; 2. Add the CWMP function; 3. Improve the performance of the software.
Archived page, fetched 29 September 2026
-
Archer C20(US)_V5_181213 27 December 2018
Release notes — disclosure 0.31
First firmware released for Archer C20(US) 5.0
Archived page, fetched 29 September 2026
Evidence
2 archived pages sit behind this record, the earliest read on 1 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 Archer C20 · openwrt_id tplink_archer-c20-v5
Judged by lifecycle-1 on 30 September 2026.
How these verdicts are computed.