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Ac6 Firmware CVE-2025-44172

| EUVDEUVD-2025-16664 MEDIUM
Stack-based Buffer Overflow (CWE-121)
2025-06-02 cve@mitre.org
6.5
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A06:2021 - Vulnerable and Outdated Components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

Successful exploitation can lead to arbitrary code execution, denial of service, or privilege escalation depending on the memory layout and protections in place. With a CVSS score of 6.5 (MEDIUM), this represents a moderate risk.

Exploit ScenarioDerived

An attacker sends an oversized input to a vulnerable function, overwriting the return address on the stack to redirect execution to attacker-controlled shellcode.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 14, 2026

Tenda AC6 V15.03.05.16 was discovered to contain a stack overflow via the time parameter in the setSmartPowerManagement function.

Earlier versions of this analysis (1)
v1 Mar 14, 2026 - 16:47 CVSS 6.5

RemediationAI

Use memory-safe languages or bounds-checked functions. Enable ASLR, DEP/NX, and stack canaries. Apply vendor patches promptly.

Affected VersionsENISA

n/a n/a

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

A buffer overflow occurs when data written to a buffer exceeds its allocated size, potentially overwriting adjacent memory and corrupting program state. This vulnerability is classified as Stack-based Buffer Overflow (CWE-121).

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 6.5 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

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
Low
Integrity
Low
Availability
None

Lifecycle Timeline

2
PoC Detected
Jun 03, 2025 - 15:55 vuln.today
Public exploit code
CVE Published
Jun 02, 2025 - 15:15 nvd
MEDIUM 6.5

Executive ViewAI

Why It Matters

Organizations using Tenda AC6 V15.03.05.16 should be aware of notable risk from CVE-2025-44172, a stack-based buffer overflow vulnerability rated CVSS 6.5. Exploitation could cause memory corruption or application crashes. Proof-of-concept code is publicly available. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Moderate
Compensating Controls

Apply vendor patch. If patching is delayed: enable ASLR/DEP, apply network segmentation.

Threat Intelligence Overview

EPSS Score
0.1%
Top 72% exploitable
Exploit
POC
Public exploit code exists
Data Quality
5 sources
Confidence: Medium

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 MEDIUM
CISA KEV No
Public POC Yes
EPSS 0.1%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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

Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
Yes

Priority Score

52
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +32
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.

CVE-2024-52714 CRITICAL POC
9.8 Nov 19

Tenda AC6 v2.0 v15.03.06.50 was discovered to contain a buffer overflow in the function 'fromSetSysTime. Rated critical

CVE-2025-25343 CRITICAL POC
9.8 Feb 12

Tenda AC6 V15.03.05.16 firmware has a buffer overflow vulnerability in the formexeCommand function. Rated critical sever

CVE-2025-29031 CRITICAL POC
9.8 Mar 14

Tenda AC6 v15.03.05.16 was discovered to contain a buffer overflow via the fromAddressNat function. Rated critical sever

CVE-2025-29030 CRITICAL POC
9.8 Mar 14

Tenda AC6 v15.03.05.16 was discovered to contain a buffer overflow via the formWifiWpsOOB function. Rated critical sever

CVE-2025-29029 CRITICAL POC
9.8 Mar 14

Tenda AC6 v15.03.05.16 was discovered to contain a buffer overflow via the formSetSpeedWan function. Rated critical seve

CVE-2023-40838 CRITICAL POC
9.8 Aug 30

Tenda AC6 US_AC6V1.0BR_V15.03.05.16_multi_TD01.bin function 'sub_3A1D0' contains a command execution vulnerability. Rate

CVE-2023-40846 CRITICAL POC
9.8 Aug 28

Tenda AC6 US_AC6V1.0BR_V15.03.05.16_multi_TD01.bin is vulnerable to Buffer Overflow via function sub_90998. Rated critic

CVE-2023-38937 CRITICAL POC
9.8 Aug 07

Tenda AC10 V1.0 V15.03.06.23, AC1206 V15.03.06.23, AC8 v4 V16.03.34.06, AC6 V2.0 V15.03.06.23, AC7 V1.0 V15.03.06.44, AC

CVE-2023-38936 CRITICAL POC
9.8 Aug 07

Tenda AC10 V1.0 V15.03.06.23, AC1206 V15.03.06.23, AC6 V2.0 V15.03.06.23, AC7 V1.0 V15.03.06.44, AC5 V1.0 V15.03.06.28,

CVE-2023-38933 CRITICAL POC
9.8 Aug 07

Tenda AC6 V2.0 V15.03.06.23, AC7 V1.0 V15.03.06.44, F1203 V2.0.1.6, AC5 V1.0 V15.03.06.28, FH1203 V2.0.1.6 and AC9 V3.0

CVE-2023-38931 CRITICAL POC
9.8 Aug 07

Tenda AC10 V1.0 V15.03.06.23, AC1206 V15.03.06.23, AC8 v4 V16.03.34.06, AC6 V2.0 V15.03.06.23, AC7 V1.0 V15.03.06.44, F1

CVE-2023-2923 CRITICAL POC
9.8 May 27

A vulnerability classified as critical was found in Tenda AC6 US_AC6V1.0BR_V15.03.05.19. Rated critical severity (CVSS 9

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