CVE-2026-102812

Hardcoded AES-128 Key and Fixed IV in Configuration Backup Encryption in TP-Link RE305 and Archer C7

Published Oct 27, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Description
A hard-coded
cryptographic key vulnerability exists in the user-configuration backup
mechanism of TP-Link RE305 V3 and Archer C7 V5. A fixed AES-128 key and
initialization vector are embedded in the firmware configuration-management
component. An attacker who obtains an affected configuration backup file may
extract the cryptographic material from the firmware and use it to decrypt the
backup. 









Successful
exploitation may disclose sensitive configuration information contained in a
backup file, including administrator passwords and Wi-Fi credentials.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Tp-link
Tp-link archer C20 V5
Tp-link re305
Vendors & Products Tp-link
Tp-link archer C20 V5
Tp-link re305
Type Values Removed Values Added
Description A hard-coded cryptographic key vulnerability exists in the user-configuration backup mechanism of TP-Link RE305 V3 and Archer C7 V5. A fixed AES-128 key and initialization vector are embedded in the firmware configuration-management component. An attacker who obtains an affected configuration backup file may extract the cryptographic material from the firmware and use it to decrypt the backup.  Successful exploitation may disclose sensitive configuration information contained in a backup file, including administrator passwords and Wi-Fi credentials.
Title Hardcoded AES-128 Key and Fixed IV in Configuration Backup Encryption in TP-Link RE305 and Archer C7
Weaknesses CWE-321
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
TPLink
Published
Updated
Nov 4, 2026, 4:59 PM
Reserved
Sep 29, 2026, 5:18 PM
Status
Deferred
Published
Oct 27, 2026, 6:17 PM
Modified
Nov 4, 2026, 5:17 PM