What is the CVSS score of CVE-2025-69764?

CVE-2025-69764 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Is there a public PoC exploit available for CVE-2025-69764?

Yes, a public proof-of-concept exploit is available for CVE-2025-69764. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-69764?

Within 24 hours: Inventory all Tenda AX3 devices in your network and isolate affected units from production environments if operationally feasible. Within 7 days: Implement network segmentation to restrict access to vulnerable devices and deploy WAF rules to block malicious payloads targeting the formGetIptv function. Within 30 days: Replace affected Tenda AX3 units with alternative vendors or await vendor patch release; monitor Tenda security advisories daily for patch availability.

Ax3 Firmware CVE-2025-69764

CRITICAL

Stack-based Buffer Overflow (CWE-121)

2026-01-22 cve@mitre.org

RCE Buffer Overflow Memory Corruption Stack Overflow Tenda Ax3 Firmware

9.8

CVSS 3.1 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-121 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Stack buffer bounds checking MITRE ATT&CK 1 technique across 1 tactic: Execution The technique list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. Sign in to read
Impact	CVSS 9.8 with PoC. Fourth Tenda AX3 IPTV overflow discovered. The pattern suggests the entire IPTV handling codebase lacks input validation.
Exploit ScenarioDerived	An attacker uses this alternative overflow vector when other Tenda AX3 exploits are blocked, achieving the same root-level RCE on the router.

Act Now Prioritize within 24-48h. Why: CRITICAL severity + public POC available.

No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Tenda AX3 firmware has another stack-based buffer overflow in formGetIptv through a different input path, enabling remote code execution.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:54 CVSS 9.8

Fourth stack overflow in Tenda AX3 IPTV handlers enables remote code execution.

RemediationAI

Update firmware. Replace Tenda AX3 if no firmware updates are available.

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

Another CWE-121 stack-based buffer overflow in the formGetIptv function of Tenda AX3 firmware v16.03.12.11, exploitable through a different parameter than the previously discovered overflow (CVE-2025-69766).

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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

PoC Detected

Jan 26, 2026 - 20:39 vuln.today

Public exploit code

CVE Published

Jan 22, 2026 - 16:16 nvd

CRITICAL 9.8

DescriptionCVE.org

Tenda AX3 firmware v16.03.12.11 contains a stack-based buffer overflow in the formGetIptv function due to improper handling of the stbpvid stack buffer, which may result in memory corruption and remote code execution.

Executive ViewAI

Why It Matters

A critical remote code execution vulnerability (CVE-2025-69764) affects Tenda AX3 routers running firmware v16.03.12.11, with a CVSS score of 9.8 and active public exploits. Organizations using this device are at immediate risk of unauthorized network access, data theft, and infrastructure compromise. No patch is currently available from the vendor.

Business Impact: Severe

Compensating Controls

Network segmentation (restrict device accessibility), disable IPTV functionality if not required, implement strict ingress filtering and rate limiting on affected device ports, deploy Web Application Firewall (WAF) rules to detect/block buffer overflow attempts targeting formGetIptv function, monitor for suspicious connections and IOCs from public exploits, consider temporary replacement with alternative hardware pending patch availability.

Threat Intelligence Overview

EPSS Score

0.1%

Top 65% exploitable

Exploit

POC

Public exploit code exists

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

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 0.1%

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

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +49

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.

Stack-based Buffer Overflow HIGH

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.

Memory Corruption HIGH

Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.