Administrator password recovery via 1024-bit RSA key
Published Apr 15, 2026 · Updated Apr 15, 2026
Inadequate encryption in Archer C7 v5 and v5.8 through Build 20220715 allows attackers to recover administrator passwords. The uhttpd web login interface uses client-side RSA-1024 encryption for the administrator password, leaving intercepted ciphertext protected by a factorable key. Exploitation requires unauthenticated access to adjacent-network login traffic; recovered credentials grant access to router configuration.
Summary
What happened
Inadequate encryption in Archer C7 v5 and v5.8 through Build 20220715 allows attackers to recover administrator passwords. The uhttpd web login interface uses client-side RSA-1024 encryption for the administrator password, leaving intercepted ciphertext protected by a factorable key. Exploitation requires unauthenticated access to adjacent-network login traffic; recovered credentials grant access to router configuration.
The record
- CVE
- CVE-2026-5363
- Published
- Apr 15, 2026
- Updated
- Apr 15, 2026
- Vendor
- TP-Link Systems Inc.
- Product
- Archer C7
- Classifications
- CWE-326, CAPEC-50, T1557
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 15, 2026CVE publishedPublication date reported by the CVE source.
- Apr 15, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=Build 20220715
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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