**Hacker Pranks Blog Post**

**Critical Firmware Flaw Exposes TP-Link Archer NX Routers to Malicious Attacks**

A critical vulnerability in TP-Link's Archer NX routers has been patched by the company, but users are still at risk if they haven't updated their firmware. The flaw, tracked as CVE-2025-15517, allows attackers to bypass authentication and install malicious firmware on affected devices. This represents a high-risk scenario for compromise, especially considering the severity of the issue.

**Multiple Models Affected, Critical Authentication Bypass Flaw**

The vulnerability affects multiple Archer NX router models, including the NX200, NX210, NX500, and NX600. According to TP-Link's security advisory, an attacker can exploit the flaw by uploading new firmware without privileges, which can be disastrous if not addressed promptly. The company has issued a CVSS score of 8.6 for this issue, indicating its critical severity.

"A missing authentication check in the HTTP server to certain cgi endpoints allows unauthenticated access intended for authenticated users," reads the advisory. "An attacker may perform privileged HTTP actions without authentication, including firmware upload and configuration operations."

**Hardcoded Cryptographic Key Removed, Another Critical Vulnerability Fixed**

In addition to CVE-2025-15517, TP-Link has also removed a hardcoded cryptographic key in its Configuration Encryption Mechanism, tracked as CVE-2025-15605 (CVSS score of 8.5). This flaw allowed authenticated attackers to decrypt configuration files, modify them, and re-encrypt them, compromising the confidentiality and integrity of device configuration data.

"A hardcoded cryptographic key within its configuration mechanism enables decryption and re-encryption of device configuration data," reads the advisory. "An authenticated attacker may decrypt configuration files, modify them and re-encrypt them, affecting confidentiality and integrity of device configuration data."

**Impacted Products, Fixes, and Guidance from TP-Link**

Below is a list of impacted products/versions and related fixes:

* Archer NX200 * Archer NX210 * Archer NX500 * Archer NX600

TP-Link urges customers to download and install the latest firmware version to address these issues. This update will ensure that your device is protected against potential attacks.

**CISA, FCC Actions Reflect Growing Concerns over Router Security**

In September 2025, the U.S. Cybersecurity and Infrastructure Security Agency (CISA) added TP-Link Archer C7(EU) and TL-WR841N flaws to its Known Exploited Vulnerabilities (KEV) catalog. The decision reflects growing concerns over router security and underscores the need for prompt action from manufacturers.

The recent ban on importing new foreign-made consumer routers by the U.S. FCC is another worrying development in this space. While exceptions are possible, devices can no longer be sold or marketed in the U.S. unless they receive special approval.

**Conclusion**

In conclusion, it's essential to prioritize firmware updates and security patches for your TP-Link Archer NX router. By doing so, you'll protect yourself against potential attacks that could compromise your device's confidentiality, integrity, and availability.

Stay vigilant, keep your devices up-to-date, and follow us on Twitter (@securityaffairs) and Facebook for the latest cybersecurity news and updates.

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