CVE-2025-56565 DD-WRT TP-Link TL-WR740N - Authentication Bypass

DD-WRT firmware on TP-Link TL-WR740N v1 through v4 stores sensitive authentication credentials in cleartext within non-volatile memory, letting attackers with physical access extract credentials and compromise the device and network.

CVSS base score 7.6 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.19% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Information Disclosure, Privilege Escalation
CVSS vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Published
16 September 2026
Updated
15 October 2026
Weakness
CWE-312

Vendor fix

Update to the latest DD-WRT firmware version with credential storage fixes.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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