CVE-2020-24363
TP-link TL-WA855RE Missing Authentication for Critical Function Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 23 September 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
TP-Link TL-WA855RE V5 20200415-rel37464 devices allow an unauthenticated attacker (on the same network) to submit a TDDP_RESET POST request for a factory reset and reboot. The attacker can then obtain incorrect access control by setting a new administrative password.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 22.19% probability · 98th percentile
- Public exploits
- 1 in Exploit-DB · first 23 November 2020
- CISA KEV
- Listed 2 September 2025 · due 23 September 2025
- Weakness
- CWE-306
- Affected
- tp-link/tl-wa855re firmware
- Source
- cve@mitre.org
EPSS moved from 22.2% on 13 October 2026 to 22.2% on 30 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://www.tp-link.com/us/home-networking/range-extender/tl-wa855re/#overview ; https://www.tp-link.com/us/support/download/tl-wa855re/#FAQs ; https://nvd.nist.gov/vuln/detail/CVE-2020-24363
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://malwrforensics.com/en/2020/08/31/cve-2020-24363-tl-wa855re-v5-advisory/Third Party Advisory
- https://pastebin.com/VjHM4UiAThird Party Advisory
- https://www.tp-link.com/us/support/download/tl-wa855re/#FirmwareProduct
- http://malwrforensics.com/en/2020/08/31/cve-2020-24363-tl-wa855re-v5-advisory/Third Party Advisory
- https://pastebin.com/VjHM4UiAThird Party Advisory
- https://www.tp-link.com/us/support/download/tl-wa855re/#FirmwareProduct
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-24363US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.