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CVE-2025-29121· NVD / CVE Program· CNA mitre

A vulnerability was found in Tenda AC6 V15.03.05.16.

A vulnerability was found in Tenda AC6 V15.03.05.16. The vulnerability affects the functionality of the /goform/fast_setting_wifi_set file form_fast_setting_wifi_set. Using the timeZone parameter causes a stack-based buffer overflow.

HighCVSS 7.5 · v3.1—No exploit No fix recorded
Published
Mar 20, 2025
Updated
Jun 17, 2026
EPSS
0.5% · 39th 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 · 0.5%

CISA SSVC decision

Exploitation
proof of concept
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Affected systems

VendorProduct
tendaac6 firmware
tendaac6

Affected versions

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

  • tenda ac6 firmware15.03.05.16

Same product

tenda: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-25450Tenda AC6 V15.03.05.09_multi was discovered to contain a stack overflow via the list parameter in the SetVirtualServerCfg function.
    42Plan
  • CVE-2022-25445Tenda AC6 v15.03.05.09_multi was discovered to contain a stack overflow via the time parameter in the PowerSaveSet function.
    42Plan
  • CVE-2025-27129An authentication bypass vulnerability exists in the HTTP authentication functionality of Tenda AC6 V5.0 V02.03.01.110.
    40Plan
  • CVE-2022-25461Tenda AC6 v15.03.05.09_multi was discovered to contain a stack overflow via the startip parameter in the SetPptpServerCfg function.
    40Plan
  • CVE-2022-25460Tenda AC6 v15.03.05.09_multi was discovered to contain a stack overflow via the endip parameter in the SetPptpServerCfg function.
    40Plan
  • CVE-2022-25459Tenda AC6 v15.03.05.09_multi was discovered to contain a stack overflow via the S1 parameter in the SetSysTimeCfg function.
    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-2025-32010153 days apartA stack-based buffer overflow vulnerability exists in the Cloud API functionality of Tenda AC6 V5.0 V02.03.01.110.
    39Monitor
  • CVE-2024-10698138 days apartTenda AC6 SetOnlineDevName formSetDeviceName stack-based overflow
    34Monitor
  • CVE-2024-52272106 days apartDenial of Service on Tenda AC6V2 Due To Stack Overflow
    33Monitor
  • CVE-2024-52273106 days apartDenial of Service on Tenda AC6V2 Due To Stack Overflow
    33Monitor
  • CVE-2024-52274106 days apartDenial of Service on Tenda AC6V2 Due To Stack Overflow
    33Monitor
  • CVE-2024-52275106 days apartDenial of Service on Tenda AC6V2 Due To Stack Overflow
    33Monitor

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-121 · Stack-based Buffer Overflow

CVSS vector

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

nvd-secondary

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

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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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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