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CVE-2025-71026· NVD / CVE Program· CNA mitre

Tenda AX-3 v16.03.12.10_CN was discovered to contain a stack overflow in the wanSpeed2 parameter of the fromAdvSetMacMtuWan function.

Tenda AX-3 v16.03.12.10_CN was discovered to contain a stack overflow in the wanSpeed2 parameter of the fromAdvSetMacMtuWan function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.

HighCVSS 7.5 · v3.1—No exploit No fix recorded
Published
Jan 13, 2026
Updated
Jun 17, 2026
EPSS
0.4% · 36th percentile
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Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
proof of concept
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Affected systems

VendorProduct
tendaax3 firmware
tendaax3

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • tenda ax3 firmware16.03.12.10_cn

Same product

tenda: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-24144Tenda AX3 v16.03.12.10_CN was discovered to contain a command injection vulnerability in the function WanParameterSetting.
    45Plan
  • CVE-2021-46393There is a stack buffer overflow vulnerability in the formSetPPTPServer function of Tenda-AX3 router V16.03.12.10_CN.
    44Plan
  • CVE-2022-24995Tenda AX3 v16.03.12.10_CN was discovered to contain a stack overflow in the function fromSetSysTime.
    43Plan
  • CVE-2023-27240Tenda AX3 V16.03.12.11 was discovered to contain a command injection vulnerability via the lanip parameter at /goform/AdvSetLanip.
    40Plan
  • CVE-2021-46394There is a stack buffer overflow vulnerability in the formSetPPTPServer function of Tenda-AX3 router V16.03.12.10_CN.
    40Plan
  • CVE-2022-24150Tenda AX3 v16.03.12.10_CN was discovered to contain a command injection vulnerability in the function formSetSafeWanWebMan.
    40Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-710240 days apartTenda AX-3 v16.03.12.10_CN was discovered to contain a stack overflow in the serviceName2 parameter of the fromAdvSetMacMtuWan function.
    30Monitor
  • CVE-2025-710250 days apartTenda AX-3 v16.03.12.10_CN was discovered to contain a stack overflow in the cloneType2 parameter of the fromAdvSetMacMtuWan function.
    30Monitor
  • CVE-2025-710270 days apartTenda AX-3 v16.03.12.10_CN was discovered to contain a stack overflow in the wanMTU2 parameter of the fromAdvSetMacMtuWan function.
    30Monitor
  • CVE-2025-6314764 days apartTenda AX3 V16.03.12.10_CN was discovered to contain a stack overflow in the deviceId parameter of the saveParentControlInfo function.
    30Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

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Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

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