What is the CVSS score of CVE-2025-5853?

CVE-2025-5853 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.3%.

Which versions of Ac6 Firmware are affected by CVE-2025-5853?

A critical remote code execution vulnerability affecting Tenda AC6 routers (model 15.03.05.16) allows unauthenticated attackers to execute arbitrary code through a stack buffer overflow.

Is there a public PoC exploit available for CVE-2025-5853?

Yes, a public proof-of-concept exploit is available for CVE-2025-5853. Prioritise patching immediately. EPSS: 0.3%.

How to fix or mitigate CVE-2025-5853?

Within 24 hours: Inventory all Tenda AC6 15.03.05.16 devices in your environment and isolate affected units from critical network segments if operationally feasible. Within 7 days: Implement network segmentation to restrict access to the vulnerable /goform/SetRemoteWebCfg endpoint and disable remote web management features if not essential. Within 30 days: Replace affected Tenda AC6 units with alternative vendors or firmware versions once patched, and conduct network forensics to detect unauthorized access attempts during the vulnerability window.

Ac6 Firmware CVE-2025-5853

EUVD-2025-17419 HIGH

Buffer Overflow (CWE-119)

2025-06-09 cna@vuldb.com

Buffer Overflow Tenda Ac6 Firmware

8.8

CVSS 3.1

CVSS VectorNVD

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

EUVD ID Assigned

Mar 14, 2026 - 19:21 euvd

EUVD-2025-17419

Analysis Generated

Mar 14, 2026 - 19:21 vuln.today

PoC Detected

Jun 09, 2025 - 19:04 vuln.today

Public exploit code

CVE Published

Jun 09, 2025 - 01:15 nvd

HIGH 8.8

DescriptionNVD

A vulnerability classified as critical was found in Tenda AC6 15.03.05.16. Affected by this vulnerability is the function formSetSafeWanWebMan of the file /goform/SetRemoteWebCfg. The manipulation of the argument remoteIp leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

AnalysisAI

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

Technical ContextAI

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

RemediationAI

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

CVE-2025-5853 vulnerability details – vuln.today

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Ac6 Firmware CVE-2025-5853

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code