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CVE-2026-5039

Predictable Default Cryptographic Key Used for DES Encryption in TP-Link TL-WL841N PUBLISHED

Description (CNA)

TP-Link TL-WR841N v13 uses DES-CBC encryption in the TDDPv2 debug protocol with a cryptographic key derived from default web management credentials, making the key predictable if device is left in default configuration. A network-adjacent attacker can exploit this weakness to gain unauthorized access to the protocol, read debug data, modify certain device configuration values, and trigger device reboot, resulting in loss of integrity and a denial-of-service condition.

Affected (CNA)

Vendor / productVersions
TP-Link Systems Inc. / TL-WL841N v13affected 0 before 0.9.1 Build 20231120 Rel.62366

CWE

CWE-1394

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.