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
- 20.69% probability · 97th percentile
- CISA KEV
- Listed 2 September 2025 · due 23 September 2025
- Weakness
- CWE-306
- Affected
- tp-link/tl-wa855re firmware
- Source
- cve@mitre.org
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
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. Refreshed daily.