What is the CVSS score of CVE-2026-3165?

CVE-2026-3165 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: 0.1%.

Which versions of F453 Firmware are affected by CVE-2026-3165?

A critical vulnerability in Tenda F453 wireless routers allows remote attackers to compromise device security with an 8.8 CVSS severity rating.

Is there a public PoC exploit available for CVE-2026-3165?

Yes, a public proof-of-concept exploit is available for CVE-2026-3165. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-3165?

Within 24 hours: Inventory all Tenda F453 devices across the organization and isolate affected units from critical network segments. Within 7 days: Disable guest WiFi functionality if operationally feasible, implement network access controls, and apply WAF rules to block suspicious requests to /goform/AdvSetWrlsafeset. Within 30 days: Replace affected Tenda F453 devices with patched alternatives or supported equipment; monitor vendor for patch availability and deploy immediately upon release.

F453 Firmware CVE-2026-3165

HIGH

Buffer Overflow (CWE-119)

2026-02-25 cna@vuldb.com

Buffer Overflow F453 Firmware

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

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

Primary rating from NVD · only source for this CVE.

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

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Feb 25, 2026 - 17:53 vuln.today

Public exploit code

CVE Published

Feb 25, 2026 - 06:16 nvd

HIGH 8.8

DescriptionCVE.org

A vulnerability was determined in Tenda F453 1.0.0.3. Impacted is the function fromSetWifiGusetBasic of the file /goform/AdvSetWrlsafeset of the component httpd. This manipulation of the argument mit_ssid causes buffer overflow. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized.

AnalysisAI

Remote code execution in Tenda F453 firmware 1.0.0.3 through buffer overflow in the WiFi configuration handler allows authenticated attackers to execute arbitrary code with full system privileges. Public exploit code exists for this vulnerability, and no patch is currently available. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Authenticate to Tenda F453 web interface

Delivery

Send crafted HTTP request to /goform/AdvSetWrlsafeset

Exploit

Inject oversized mit_ssid parameter

Execution

Overflow buffer in fromSetWifiGusetBasic function

Impact

Execute arbitrary code with httpd privileges

Access

Authenticate to Tenda F453 web interface

Delivery

Send crafted HTTP request to /goform/AdvSetWrlsafeset

Exploit

Inject oversized mit_ssid parameter

Execution

Overflow buffer in fromSetWifiGusetBasic function

Impact

Execute arbitrary code with httpd privileges

Vulnerability AssessmentAI

Exploitation	Tenda F453 firmware version 1.0.0.3 with httpd service enabled; attacker must have valid login credentials to access the /goform/AdvSetWrlsafeset endpoint and fromSetWifiGusetBasic function Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	CVSS 8.8 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	A remote attacker could exploit this vulnerability to compromise the affected system.
Remediation	Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Inventory all Tenda F453 devices across the organization and isolate affected units from critical network segments. …

Threat intelligence, references, and detailed analysis are available after sign-in.

CVE-2026-3165 vulnerability details – vuln.today

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F453 Firmware CVE-2026-3165

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

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Attack ChainAIDerived

Vulnerability AssessmentAI

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External POC / Exploit Code