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F453 Firmware CVE-2026-3275

HIGH
Buffer Overflow (CWE-119)
2026-02-27 cna@vuldb.com
Buffer Overflow F453 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 - 21:55 vuln.today
PoC Detected
Feb 27, 2026 - 15:46 vuln.today
Public exploit code
CVE Published
Feb 27, 2026 - 02:16 nvd
HIGH 8.8

DescriptionCVE.org

A weakness has been identified in Tenda F453 1.0.0.3. This affects the function fromAddressNat of the file /goform/addressNat of the component httpd. Executing a manipulation of the argument entrys can lead to buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks.

AnalysisAI

Remote code execution in Tenda F453 firmware allows authenticated attackers to achieve complete system compromise through a buffer overflow in the httpd address NAT function. Public exploit code exists for this vulnerability, and no patch is currently available, leaving affected devices at immediate risk.

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Authenticate to Tenda F453 httpd
Delivery
Send crafted POST to /goform/addressNat
Exploit
Manipulate entrys parameter with oversized payload
Execution
Overflow buffer in fromAddressNat function
Impact
Execute arbitrary code
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Vulnerability AssessmentAI

Exploitation Tenda F453 firmware version 1.0.0.3; authenticated access to httpd service required (CVSS PR:L); httpd component must expose /goform/addressNat endpoint; entrys parameter processing in fromAddressNat function must lack bounds checking 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 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: Identify all Tenda F453 1.0.0.3 devices in production and isolate them from critical network segments; document inventory and affected business functions. …

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CVE-2026-3275 vulnerability details – vuln.today
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