Vulnerability · Published Mar 25, 2020 · Assigned by zdi

CVE-2020-10886

High 8.1

In plain English

A high-severity OS command injection in Archer A7 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 5.0% (higher than 92% of all known vulnerabilities).

Severity (CVSS 3.0)8.1High

Exploit odds (30 days)5.0%top 7.8% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the tmpServer service, which listens on TCP port 20002. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-9662.

Affected products (as reported)

Vendor	Product	Versions
TP-Link	Archer A7	Firmware Ver: 190726

Weakness: CWE-78 · Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://www.zerodayinitiative.com/advisories/ZDI-20-339/ x_refsource_MISC