CVE-2026-8697

Improper Authentication Rate Limiting on TP-Link's Archer C64

HIGH
8.8
CVSS Score
Published: May 28, 2026 at 03:45 PM UTC
Updated: October 26, 2026 at 01:10 PM UTC
2 products affected across 1 vendorArcher C64 FirmwareLink Archer C64· also runs on 1 platform

Using Archer C64 v1.0 by TP-Link Systems Inc.?

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Severity
HIGH8.8
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

tp-link-archer-c64 (same device)
v < 1.15.0 Build 250729 Rel.63489n(4555)
Affected range stops below 1.15.0 Build 250729 Rel.63489n(4555), so it looks safe — our inference, not a vendor statement

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-288CWE-306

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