Hardcoded DES Decryption Keys in TP-Link Archer C50 V3/V4/V5 and C20 V5

Use of Hard-coded Credentials in TP-Link Archer C50 V3( <= 180703)/V4( <= 250117 )/V5( <= 200407 ), and C20 V5 (<US_V5_260419 or <EU_V5_260317) allows attackers to decrypt the config.xml files.

Reflected XSS Vulnerability on TP-Link Archer C60

User-controlled input is reflected into the HTML output without proper encoding on TP-Link Archer C60 v3, allowing arbitrary JavaScript execution via a crafted URL. An attacker could run script in the device web UI context, potentially enabling credential theft, session hijacking, or unintended actions if a privileged user is targeted.

Archer C50 firmware versions prior to 'Archer C50(JP)_V3_230505' and Archer C55 firmware versions prior to 'Archer C55(JP)_V1_230506' use hard-coded credentials to login to the affected device, which may allow a network-adjacent unauthenticated attacker to execute an arbitrary OS command.

Multiple TP-LINK products allow a network-adjacent authenticated attacker to execute arbitrary OS commands. Affected products/versions are as follows: Archer C50 firmware versions prior to 'Archer C50(JP)_V3_230505', Archer C55 firmware versions prior to 'Archer C55(JP)_V1_230506', and Archer C20 firmware versions prior to 'Archer C20(JP)_V1_230616'.