What is the CVSS score of EUVD-2025-21088?

EUVD-2025-21088 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: 0.4%.

Is there a public PoC exploit available for EUVD-2025-21088?

Yes, a public proof-of-concept exploit is available for EUVD-2025-21088. Prioritise patching immediately. EPSS: 0.4%.

How to fix or mitigate EUVD-2025-21088?

Within 24 hours: Inventory all Tenda O3V2 devices in your environment and isolate affected units from production networks if possible. Within 7 days: Implement network segmentation to restrict access to the vulnerable /goform/setPing endpoint and monitor for exploitation attempts. Within 30 days: Replace affected devices with patched versions or alternative vendors once firmware updates become available, or implement a WAF ruleset to block malicious ping requests.

O3 Firmware EUVD-2025-21088

| CVE-2025-7418 HIGH

Buffer Overflow (CWE-119)

2025-07-10 cna@vuldb.com

Buffer Overflow Tenda O3 Firmware

8.8

CVSS 3.1 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-119 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Bounds checking, buffer size validation MITRE ATT&CK 2 techniques across 2 tactics: Execution, Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS 8.8. EPSS 0.4%. Public PoC/exploit available. No patch confirmed.
Exploit ScenarioDerived	An attacker could exploit this vulnerability in A vulnerability to compromise the security of affected deployments, potentially impacting confidentiality, integrity, or availability.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 16, 2026

A buffer overflow vulnerability in A vulnerability (CVSS 8.8). Risk factors: public PoC available.

Earlier versions of this analysis (1)

v1 Mar 16, 2026 - 06:52 CVSS 8.8

RemediationAI

Monitor vendor channels for patch availability. Consider network segmentation to limit exposure if patching is delayed.

Affected VersionsENISA

O3V2 1.0.0.12(3880)

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

CWE-119 (Buffer Overflow). CVSS 8.8 indicates high severity. Affects A vulnerability.

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Exploit and PoC references, threat intelligence from 22 sources

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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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

PoC Detected

Jul 16, 2025 - 16:41 vuln.today

Public exploit code

CVE Published

Jul 10, 2025 - 23:15 nvd

HIGH 8.8

DescriptionCVE.org

A vulnerability was found in Tenda O3V2 1.0.0.12(3880) and classified as critical. Affected by this issue is the function fromPingResultGet of the file /goform/setPing of the component httpd. The manipulation of the argument destIP leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

Executive ViewAI

Why It Matters

A critical remote code execution vulnerability affects Tenda O3V2 routers (version 1.0.0.12) with no patch currently available. Attackers can exploit this flaw without authentication to gain complete control of affected devices, potentially compromising network security and sensitive data for any organization using this equipment.

Business Impact: High

Compensating Controls

Deploy WAF rules to block HTTP POST requests to /goform/setPing with oversized destIP parameters; restrict administrative access to router management interfaces via network ACLs; implement network segmentation to isolate affected routers; disable remote management features if not operationally required; monitor network traffic for exploitation patterns and command injection attempts; establish device replacement plan pending patch availability.

Threat Intelligence Overview

EPSS Score

0.4%

Top 43% exploitable

Exploit

POC

Public exploit code exists

Data Quality

6 sources

Confidence: High

EUVD

NVD

CVE.org

EPSS

GitHub

VulDB

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 HIGH

CISA KEV No

Public POC Yes

EPSS 0.4%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

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

Scheduled

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +44

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

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.