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Fh451 Firmware CVE-2025-45513

CRITICAL
Stack-based Buffer Overflow (CWE-121)
2025-05-09 cve@mitre.org
9.8
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V15 - Secure Coding and Architecture Stack buffer bounds checking
MITRE ATT&CK

1 technique across 1 tactic: Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.45%.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the critical-severity affected system.

Act Now Prioritize within 24-48h. Why: CRITICAL severity + public POC available.
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 28, 2026

Tenda FH451 V1.0.0.9 has a stack overflow vulnerability in the function.P2pListFilter. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-121. Tenda FH451 V1.0.0.9 has a stack overflow vulnerability in the function.P2pListFilter. Affected products include: Tenda Fh451 Firmware.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
PoC Detected
May 24, 2025 - 00:51 vuln.today
Public exploit code
CVE Published
May 09, 2025 - 16:15 nvd
CRITICAL 9.8

DescriptionCVE.org

Tenda FH451 V1.0.0.9 has a stack overflow vulnerability in the function.P2pListFilter.

Executive ViewAI

Why It Matters

Organizations using Tenda FH451 V1.0.0.9 face critical risk from CVE-2025-45513, a stack-based buffer overflow vulnerability rated CVSS 9.8. Exploitation could allow attackers to corrupt memory, crash the application, or potentially execute arbitrary code. Proof-of-concept code is publicly available, increasing the risk of exploitation. Organizations should apply vendor updates immediately when available and implement compensating controls in the interim.

Business Impact: Severe
Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Enable ASLR and DEP where available; (2) Implement network segmentation; (3) Monitor for exploitation indicators.

Threat Intelligence Overview

EPSS Score
0.4%
Top 37% exploitable
Exploit
POC
Public exploit code exists

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC Yes
EPSS 0.4%
Patch available No
Active threat No
Deciding rule
CRITICAL severity + public POC available
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Out-of-Cycle
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
Very High

Priority Score

69
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +49
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

A stack-based buffer overflow occurs when a program writes more data to a buffer located on the stack than it was allocated to hold.

Affected Products (CPE)CVE.org

cpe:2.3:o:tenda:fh451_firmware:1.0.0.9:*:*:*:*:*:*:*
CVE-2024-46048 CRITICAL POC
9.8 Sep 13

Tenda FH451 v1.0.0.9 has a command injection vulnerability in the formexeCommand function i. Rated critical severity (CV

CVE-2024-46046 CRITICAL POC
9.8 Sep 13

Tenda FH451 v1.0.0.9 has a stack overflow vulnerability located in the RouteStatic function. Rated critical severity (CV

CVE-2025-7434 HIGH POC
8.8 Jul 11

CVE-2025-7434 is a critical stack-based buffer overflow vulnerability in Tenda FH451 wireless routers (versions up to 1.

CVE-2025-7506 HIGH POC
8.8 Jul 12

CVE-2025-7506 is a critical stack-based buffer overflow vulnerability in Tenda FH451 router firmware version 1.0.0.9, ex

CVE-2025-7505 HIGH POC
8.8 Jul 12

CVE-2025-7505 is a critical stack-based buffer overflow vulnerability in Tenda FH451 v1.0.0.9 affecting the HTTP POST re

CVE-2026-2911 HIGH POC
8.8 Feb 22

Buffer overflow in Tenda FH451 firmware versions up to 1.0.0.9 allows authenticated remote attackers to achieve code exe

CVE-2026-3677 HIGH POC
8.8 Mar 07

Stack overflow in Tenda FH451 firmware's setcfm function allows authenticated remote attackers to achieve complete syste

CVE-2026-3678 HIGH POC
8.8 Mar 07

Remote code execution in Tenda FH451 firmware via stack-based buffer overflow in the WAN configuration endpoint allows u

CVE-2024-46047 HIGH POC
7.5 Sep 13

Tenda FH451 v1.0.0.9 has a stack overflow vulnerability in the fromDhcpListClient function. Rated high severity (CVSS 7.

CVE-2025-44176 MEDIUM POC
6.5 May 12

Tenda FH451 V1.0.0.9 is vulnerable to Remote Code Execution in the formSafeEmailFilter function. Rated medium severity (

CVE-2025-45514 MEDIUM POC
6.5 May 07

Tenda FH451 V1.0.0.9 has a stack overflow vulnerability in the function.frmL7ImForm. Rated medium severity (CVSS 6.5), t

CVE-2024-12002 MEDIUM POC
5.3 Nov 30

A vulnerability classified as problematic was found in Tenda FH451, FH1201, FH1202 and FH1206 up to 20241129. Rated medi

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