What is the CVSS score of CVE-2024-57049?

CVE-2024-57049 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 48.8%.

Which versions of Archer C20 Firmware are affected by CVE-2024-57049?

Organizations using the TP-Link Archer c20 router with firmware face critical risk from CVE-2024-57049, a improper authentication vulnerability rated CVSS 9.8.

Is there a public PoC exploit available for CVE-2024-57049?

Yes, a public proof-of-concept exploit is available for CVE-2024-57049. Prioritise patching immediately. EPSS: 48.8%.

How to fix or mitigate CVE-2024-57049?

Within 24 hours: Identify all affected systems running the TP-Link Archer c20 router with firmware and apply vendor patches immediately. Audit authentication configurations and rotate any potentially compromised credentials.

Archer C20 Firmware CVE-2024-57049

CRITICAL

Improper Authentication (CWE-287)

2025-02-18 cve@mitre.org

TP-Link Authentication Bypass Archer C20 Firmware

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:27 vuln.today

PoC Detected

Feb 12, 2026 - 06:16 vuln.today

Public exploit code

CVE Published

Feb 18, 2025 - 15:15 nvd

CRITICAL 9.8

DescriptionCVE.org

A vulnerability in the TP-Link Archer c20 router with firmware version V6.6_230412 and earlier permits unauthorized individuals to bypass the authentication of some interfaces under the /cgi directory. When adding Referer: http://tplinkwifi.net to the the request, it will be recognized as passing the authentication. NOTE: this is disputed by the Supplier because the response to the API call is only "non-sensitive UI initialization variables."

AnalysisAI

A vulnerability in the TP-Link Archer c20 router with firmware version V6.6_230412 and earlier permits unauthorized individuals to bypass the authentication of some interfaces under the /cgi. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and EPSS exploitation probability 48.8%.

Technical ContextAI

This vulnerability is classified as Improper Authentication (CWE-287), which allows attackers to bypass authentication mechanisms to gain unauthorized access. A vulnerability in the TP-Link Archer c20 router with firmware version V6.6_230412 and earlier permits unauthorized individuals to bypass the authentication of some interfaces under the /cgi directory. When adding Referer: http://tplinkwifi.net to the the request, it will be recognized as passing the authentication. NOTE: this is disputed by the Supplier because the response to the API call is only "non-sensitive UI initialization variables." Affected products include: Tp-Link Archer C20 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement multi-factor authentication, enforce strong password policies, use proven authentication frameworks.