CVE-2026-89052 json
Hardcoded AES encryption key in Archer C6
published 2026-10-21 18 d ago modified 2026-10-30 9 d ago also EUVD-2026-107666
- cvss
- 5.9
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 14%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- TP-Link Systems Inc. Archer C6 V2 1.2.1 Build 260902
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 9 d ago
Exploit prediction
0.24% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.9 | CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N |
| CNA | 4.0 | 5.9 | CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- TP-Link Systems Inc. Archer C6 V2
Classification
- Weakness
-
- CWE-321 Use of Hard-coded Cryptographic Key
References
-
tp-link.com
/us/support/download/archer-c6/v2/#Firmware
patch
-
tp-link.com
/us/support/faq/5356/
vendor-advisory
Sources
- CVE List CVE-2026-89052
- NVD CVE-2026-89052
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