CVE-2025-30256: ac6 (CVSS 8.6)

Description

A denial of service vulnerability exists in the HTTP Header Parsing functionality of Tenda AC6 V5.0 V02.03.01.110. A specially crafted series of HTTP requests can lead to a reboot. An attacker can send multiple network packets to trigger this vulnerability.

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CVSS v3.1 Score

8.6

HIGH

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

Weakness Type (CWE)

CWE-772 CWE-772

Affected Products

Vendor	Product	Versions
tenda	ac6_firmware	All
tenda	ac6	All

References

Other References

https://talosintelligence.com/vulnerability_reports/TALOS-2025-2166 https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2166

Frequently Asked Questions

What is CVE-2025-30256? +

A denial of service vulnerability exists in the HTTP Header Parsing functionality of Tenda AC6 V5.0 V02.03.01.110. A specially crafted series of HTTP requests can lead to a reboot. An attacker can send multiple network packets to trigger this vulnerability. It has a CVSS v3.1 base score of 8.6 (HIGH).

How severe is CVE-2025-30256? +

CVE-2025-30256 has a CVSS v3.1 score of 8.6 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-30256? +

CVE-2025-30256 affects products from tenda, specifically: ac6, ac6_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-30256? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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