Improper Authentication Rate Limiting on TP-Link's Archer C64
Summary
| CVE | CVE-2026-8697 |
|---|---|
| State | PUBLISHED |
| Assigner | TPLink |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-28 17:16:33 UTC |
| Updated | 2026-05-28 18:38:35 UTC |
| Description | Due to improper enforcement of authentication rate-limiting on a debug SSH service in Archer C64 v1, the SSH service allows unlimited authentication attempts and uses the same credentials as the web interface. This enables an attacker to brute-force valid credentials via SSH. Successful exploitation could allow an attacker with adjacent network access to obtain administrative credentials through unrestricted authentication attempts and subsequently gain full administrative access to the device, impacting system confidentiality, integrity, and availability. |
Risk And Classification
Primary CVSS: v4.0 8.7 HIGH from f23511db-6c3e-4e32-a477-6aa17d310630
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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
EPSS: 0.000340000 probability, percentile 0.103930000 (date 2026-06-01)
Problem Types: CWE-288 | CWE-288 CWE-288 Authentication bypass using an alternate path or channel
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | f23511db-6c3e-4e32-a477-6aa17d310630 | Secondary | 8.7 | HIGH | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/C... |
| 4.0 | CNA | CVSS | 8.7 | HIGH | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
CVSS v4.0 Breakdown
Attack Vector
AdjacentAttack Complexity
LowAttack Requirements
NonePrivileges Required
NoneUser Interaction
NoneConfidentiality
HighIntegrity
HighAvailability
HighSub Conf.
NoneSub Integrity
NoneSub Availability
NoneCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | TP-Link Systems Inc. | Archer C64 V1.0 | affected 1.15.0 Build 250729 Rel.63489n(4555) custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| www.tp-link.com/en/support/download/archer-c64/v1 | f23511db-6c3e-4e32-a477-6aa17d310630 | www.tp-link.com | |
| www.tp-link.com/us/support/faq/5105 | f23511db-6c3e-4e32-a477-6aa17d310630 | www.tp-link.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Tanjim Kamal (en)
There are currently no legacy QID mappings associated with this CVE.