CVE-2026-2203

HIGH
2026-02-09 [email protected]
8.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Feb 10, 2026 - 15:07 vuln.today
Public exploit code
CVE Published
Feb 09, 2026 - 03:16 nvd
HIGH 8.8

Tags

Buffer Overflow Ac8 Firmware

Description

A flaw has been found in Tenda AC8 16.03.33.05. Affected by this vulnerability is an unknown functionality of the file /goform/fast_setting_wifi_set of the component Embedded Httpd Service. This manipulation of the argument timeZone causes buffer overflow. Remote exploitation of the attack is possible. The exploit has been published and may be used.

Analysis

Buffer overflow in Tenda AC8 firmware version 16.03.33.05 allows authenticated remote attackers to execute arbitrary code via the timeZone parameter in the /goform/fast_setting_wifi_set endpoint. Public exploit code exists for this vulnerability, and no patch is currently available. …

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Remediation

Within 24 hours: Inventory all Tenda AC8 devices in production and isolate affected units from critical network segments. Within 7 days: Contact Tenda for patch availability and ETA; implement network access controls limiting administrative access to the embedded web service. …

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Priority Score

64
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +44
POC: +20

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CVE-2026-2203 vulnerability details – vuln.today
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