Vulnerability · Published May 7, 2020 · Assigned by zdi

CVE-2020-10916

High 8.0

In plain English

A high-severity improper authentication in TL-WA855RE from TP-Link. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities).

Severity (CVSS 3.0)8.0High

Exploit odds (30 days)1.1%top 33.7% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

This vulnerability allows network-adjacent attackers to escalate privileges on affected installations of TP-Link TL-WA855RE Firmware Ver: 855rev4-up-ver1-0-1-P1[20191213-rel60361] Wi-Fi extenders. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the first-time setup process. The issue results from the lack of proper validation on first-time setup requests. An attacker can leverage this vulnerability to reset the password for the Admin account and execute code in the context of the device. Was ZDI-CAN-10003.

Affected products (as reported)

Vendor	Product	Versions
TP-Link	TL-WA855RE	Firmware Ver: 855rev4-up-ver1-0-1-P1[20191213-rel60361]

Weakness: CWE-287 · Vector: CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://www.zerodayinitiative.com/advisories/ZDI-20-553/ x_refsource_MISC