Hardcoded AES-128 Key and Fixed IV in Configuration Backup Encryption in TP-Link RE305 and Archer C7
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 1.1.8 Build 20260921 Rel. 42853, 1.3.1 Build 20260821 Rel. 41256
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
The affected products are TP-Link RE305 and Archer C7 router/extender devices, specifically their configuration backup feature. An attacker who obtains a backup file could decrypt it using a built-in encryption key and IV, potentially exposing administrator passwords and Wi-Fi credentials.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original 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.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- TP-Link Systems Inc. RE305 v3
fixed in 1.1.8 Build 20260921 Rel. 42853
- TP-Link Systems Inc. Archer C7 v5
fixed in 1.3.1 Build 20260821 Rel. 41256