What is the CVSS score of CVE-2026-3807?

CVE-2026-3807 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 Fh1202 Firmware are affected by CVE-2026-3807?

A high-severity vulnerability (CVSS 8.8) affecting Tenda FH1202 wireless routers allows unauthenticated attackers to compromise network security settings without a vendor patch currently available.

Is there a public PoC exploit available for CVE-2026-3807?

Yes, a public proof-of-concept exploit is available for CVE-2026-3807. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-3807?

Within 24 hours: Inventory all Tenda FH1202 devices running version 1.2.0.14(408) and isolate affected units from production networks if possible. Within 7 days: Implement network segmentation to restrict administrative access to these devices and deploy WAF rules blocking requests to /goform/AdvSetWrlsafeset endpoint. Within 30 days: Evaluate replacement hardware or contact Tenda for patch availability; migrate critical network functions away from affected devices.

Fh1202 Firmware CVE-2026-3807

HIGH

Buffer Overflow (CWE-119)

2026-03-09 cna@vuldb.com

Buffer Overflow Stack Overflow Fh1202 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 - 21:56 vuln.today

PoC Detected

Mar 09, 2026 - 16:20 vuln.today

Public exploit code

CVE Published

Mar 09, 2026 - 07:16 nvd

HIGH 8.8

DescriptionCVE.org

A security vulnerability has been detected in Tenda FH1202 1.2.0.14(408). Impacted is the function formWrlsafeset of the file /goform/AdvSetWrlsafeset. Such manipulation of the argument mit_ssid/mit_ssid_index leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed publicly and may be used.

AnalysisAI

Stack overflow in Tenda FH1202 firmware version 1.2.0.14(408) allows remote attackers with low privileges to execute arbitrary code through crafted mit_ssid parameters sent to the AdvSetWrlsafeset function. Public exploit code exists for this vulnerability and no patch is currently available. The attack requires network access but no user interaction, making it readily exploitable in affected deployments.

Technical ContextAI

Classified as CWE-119 (Buffer Overflow). Affects Fh1202 Firmware. A security vulnerability has been detected in Tenda FH1202 1.2.0.14(408). Impacted is the function formWrlsafeset of the file /goform/AdvSetWrlsafeset. Such manipulation of the argument mit_ssid/mit_ssid_index leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed publicly and may be used.

RemediationAI

Monitor vendor advisories for a patch. Enable ASLR, DEP/NX, and stack canaries where possible. Restrict network access to the affected service where possible.