CVE-2026-89052
Hardcoded AES encryption key in Archer C6
TP-Link Systems Inc. Archer C6 V2Network & edge
CVSS
5.9MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.24%Chance of exploitation activity in the next 30 days, higher than 14% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 1.2.1 Build 260902Archer C6 V2CVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Description
A hardcoded cryptographic key management vulnerability exists in Archer C6 due to the use of a universal cryptographic key shared across devices. An attacker who obtains an encrypted configuration file or other protected credential data can recover plaintext credentials.
Successful exploitation may allow unauthorized disclosure of sensitive information, including administrative credentials.
Text from CVE List
Affected versions 1
- Archer C6 V2affected: all versions before 1.2.1 Build 260902CVE List