What’s Vulnerable › Vulnerabilities

CVE-2025-14175: Weak Algorithm Support in SSH Server on TL-WR820N

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-29 · updated 2026-10-07
• Weakness: CWE-327

Description

A vulnerability in the SSH server of TP-Link TL-WR820N v2.80 allows the use of a weak cryptographic algorithm, enabling an adjacent attacker to intercept and decrypt SSH traffic. Exploitation may expose sensitive information and compromise confidentiality.

Affected products

• TP-Link Systems Inc. TL-WR820N v2: before 1.15.0 — fixed in 1.15.0

How to fix

Upgrade to a fixed version: TP-Link Systems Inc. TL-WR820N v2 1.15.0. Check the vendor advisory for mitigations.

References

• https://www.tp-link.com/en/support/download/tl-wr820n/#Firmware
• https://www.tp-link.com/in/support/download/tl-wr820n/#Firmware
• https://www.tp-link.com/us/support/faq/4861/

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