CVE-2023-1389

TP-Link Archer AX21: Archer AX-21 Command Injection

As of , CVE-2023-1389 in TP-Link Archer AX21 is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.

Exploited
Yes: CISA listed it on 1 May 2023
US federal deadline
22 May 202321 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.99Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
0.00 on 1 May 2023EPSS on the day CISA listed it.
Public exploit
1 Exploit-DB entry
Fix
Vendor advice: www.tp-link.comLinks below, from CISA's entry.

What CISA says to do

Apply updates per vendor instructions.

CISA's required action

What the flaw is

TP-Link Archer AX-21 contains a command injection vulnerability that allows for remote code execution.

CISA's description

TP-Link Archer AX21 (AX1800) firmware versions before 1.1.4 Build 20230219 contained a command injection vulnerability in the country form of the /cgi-bin/luci;stok=/locale endpoint on the web management interface. Specifically, the country parameter of the write operation was not sanitized before being used in a call to popen(), allowing an unauthenticated attacker to inject commands, which would be run as root, with a simple POST request.

The CVE record's description, from tenable

CVE published
15 March 2023
Assigned by
tenable
CVSS
8.8 High (CVSS 3.1, from CISA-ADP)
CWE-77
Improper Neutralization of Special Elements used in a Command ('Command Injection')
CISA SSVC, exploitation
active
CISA SSVC, automatable
yes
CISA SSVC, technical impact
total

Timeline

  1. The CVE record was published.
  2. CISA added it to its list of exploited vulnerabilities.
  3. The US federal deadline to fix it.
  4. Exploit-DB published an exploit (EDB-ID 51677).

Public exploits

Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.

Read further