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Fh451 Firmware CVE-2026-2911

HIGH
Buffer Overflow (CWE-119)
2026-02-22 cna@vuldb.com
Buffer Overflow Fh451 Firmware
8.8
CVSS 3.1 · NVD
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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

3
Analysis Generated
Mar 12, 2026 - 22:04 vuln.today
PoC Detected
Feb 23, 2026 - 20:21 vuln.today
Public exploit code
CVE Published
Feb 22, 2026 - 04:15 nvd
HIGH 8.8

DescriptionCVE.org

A vulnerability has been found in Tenda FH451 up to 1.0.0.9. This issue affects some unknown processing of the file /goform/GstDhcpSetSer. The manipulation leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

AnalysisAI

Buffer overflow in Tenda FH451 firmware versions up to 1.0.0.9 allows authenticated remote attackers to achieve code execution through crafted requests to the /goform/GstDhcpSetSer endpoint. Public exploit code exists for this vulnerability, and no patch is currently available, leaving all affected devices at risk.

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Authenticate to Tenda FH451 web interface
Exploit
Send oversized payload to /goform/GstDhcpSetSer
Execution
Trigger buffer overflow in DHCP handler
Impact
Execute arbitrary code with device privileges
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Vulnerability AssessmentAI

Exploitation Tenda FH451 firmware version 1.0.0.9 or earlier with web management interface accessible; attacker must possess valid login credentials for the router's admin panel 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 flaw, buffer overflow.
Remediation Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Inventory all Tenda FH451 devices in production and assess network exposure; isolate or restrict access to affected devices if possible. …

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CVE-2026-2911 vulnerability details – vuln.today
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