What is the CVSS score of CVE-2025-5794?

CVE-2025-5794 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: 0.5%.

Is there a public PoC exploit available for CVE-2025-5794?

Yes, a public proof-of-concept exploit is available for CVE-2025-5794. Prioritise patching immediately. EPSS: 0.5%.

How to fix or mitigate CVE-2025-5794?

Within 24 hours: Inventory all Tenda AC5 devices running firmware 15.03.06.47 and isolate affected units from critical network segments if possible. Within 7 days: Check Tenda's security advisories for firmware updates and implement network-level mitigations (see compensating controls). Within 30 days: Replace affected devices with patched firmware versions once available, or consider alternative router vendors if Tenda does not release a patch within 60 days.

Ac5 Firmware CVE-2025-5794

EUVD-2025-17362 HIGH

Buffer Overflow (CWE-119)

2025-06-06 cna@vuldb.com

Buffer Overflow Tenda Ac5 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Weakness	CWE CWE-119 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Bounds checking, buffer size validation MITRE ATT&CK 2 techniques across 2 tactics: Execution,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 0.5%. Public PoC/exploit available. No patch confirmed.
Exploit ScenarioDerived	An attacker could exploit this vulnerability in the affected application 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 0.5% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 14, 2026

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

Earlier versions of this analysis (1)

v1 Mar 14, 2026 - 18:10 CVSS 8.8

RemediationAI

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

Affected VersionsENISA

AC5 15.03.06.47

Affected Packages

euvd ac5 no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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.

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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

Jun 09, 2025 - 19:08 vuln.today

Public exploit code

CVE Published

Jun 06, 2025 - 19:15 nvd

HIGH 8.8

DescriptionCVE.org

A vulnerability, which was classified as critical, has been found in Tenda AC5 15.03.06.47. Affected by this issue is the function formSetPPTPUserList of the file /goform/setPptpUserList. The manipulation of the argument list leads to 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 buffer overflow vulnerability has been publicly disclosed in Tenda AC5 routers (firmware 15.03.06.47), allowing unauthenticated attackers to execute arbitrary code without user interaction. Organizations using affected Tenda devices face immediate risk of network compromise, data theft, and lateral movement into internal systems, with active exploitation likely given public exploit availability.

Business Impact: High

Compensating Controls

Implement network segmentation to restrict router management access to authorized networks only; disable PPTP if not actively used; deploy WAF/IDS rules to block malicious payloads targeting /goform/setPptpUserList endpoint; restrict WAN access to router administration interfaces; monitor router logs for suspicious activity on formSetPPTPUserList function calls; consider temporary replacement with alternative networking equipment until patch availability is confirmed.

Threat Intelligence Overview

EPSS Score

0.5%

Top 34% exploitable

Exploit

POC

Public exploit code exists

Data Quality

5 sources

Confidence: Medium

EUVD

NVD

CVE.org

EPSS

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 0.5%

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: +1

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.