How to fix CVE-2025-5849?

Within 24 hours: Identify and inventory all Tenda AC15 devices in production environments and assess exposure to untrusted networks. Within 7 days: Implement network segmentation to isolate affected devices and restrict HTTP POST access to the /goform/SetRemoteWebCfg endpoint; disable remote web management features if not operationally critical. Within 30 days: Develop a device replacement strategy with IT procurement and plan migration to patched alternative router models; monitor Tenda security advisories for patch availability.

Is Ac15 Firmware affected by CVE-2025-5849?

A critical remote code execution vulnerability affects Tenda AC15 routers (version 15.03.05.19_multi) with a public exploit available, potentially allowing attackers to compromise network infrastructure without authentication.

CVE-2025-5849

EUVD-2025-17415 HIGH

2025-06-08 [email protected]

8.8

CVSS 3.1

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

Analysis Generated

Mar 14, 2026 - 19:17 vuln.today

EUVD ID Assigned

Mar 14, 2026 - 19:17 euvd

EUVD-2025-17415

PoC Detected

Jun 09, 2025 - 19:04 vuln.today

Public exploit code

CVE Published

Jun 08, 2025 - 23:15 nvd

HIGH 8.8

Description

A vulnerability was found in Tenda AC15 15.03.05.19_multi. It has been classified as critical. This affects the function formSetSafeWanWebMan of the file /goform/SetRemoteWebCfg of the component HTTP POST Request Handler. The manipulation of the argument remoteIp leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Analysis

A buffer overflow vulnerability in A vulnerability (CVSS 8.8). Risk factors: public PoC available.

Technical Context

CWE-119 (Buffer Overflow). CVSS 8.8 indicates high severity. Affects A vulnerability.

Affected Products

['A vulnerability']

Remediation

Monitor vendor channels for patch availability. Consider network segmentation to limit exposure if patching is delayed.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.2

CVSS: +44

POC: +20

CVE-2025-5849 vulnerability details – vuln.today

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CVE-2025-5849

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CVE-2025-5849

CVSS Vector

Lifecycle Timeline

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Description

Analysis

Technical Context

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External POC / Exploit Code