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CVE-2025-30256

HIGH

7.5

CVSS Score

Published: August 20, 2025 at 01:09 PM UTC

Updated: June 17, 2026 at 09:08 AM UTC

2 products affected across 1 vendorAC6 FirmwareAC6

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Severity

HIGH7.5

Exploit prediction

EPSS 0.4%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

AC6 Firmware · Tenda

95%

AC6 · Tendadevice

80%

All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Third Party Advisory

Source: [email protected]

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

Source: af854a3a-2127-422b-91ae-364da2661108

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

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-772

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