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CVE-2025-3693· NVD / CVE Program· CNA VulDB

Tenda W12 httpd cgiWifiRadioSet stack-based overflow

A vulnerability was found in Tenda W12 3.0.0.5. It has been rated as critical. Affected by this issue is the function cgiWifiRadioSet of the file /bin/httpd. The manipulation leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

HighCVSS 8.7 · v4.0—No exploit No fix recorded

Noroxi analysis

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Published
Apr 16, 2025
Updated
Jun 17, 2026
EPSS
7.4% · 94th percentile
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Report tools

JSON

Action score

36

Monitor

Low priority for now.

CVSS
34 / 40 · 8.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
2 / 30 · 7.4%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · VulDB
8.7
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
tendaw12 firmware
tendaw12

Affected versions

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

  • tenda w12 firmware3.0.0.5

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulDB). Independent of NVD's CPE analysis and usually ahead of it.

  • Tenda W12

    • 3.0.0.5affected

Same product

tenda: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-3820Tenda W12/i24 httpd cgiSysUplinkCheckSet stack-based overflow
    38Monitor
  • CVE-2025-4007Tenda W12/i24 httpd modules cgidhcpsCfgSet stack-based overflow
    34Monitor
  • CVE-2025-3803Tenda W12/i24 httpd cgiSysScheduleRebootSet stack-based overflow
    34Monitor
  • CVE-2025-3802Tenda W12/i24 httpd cgiPingSet stack-based overflow
    34Monitor
  • CVE-2025-11549Tenda W12 HTTP Request modules wifiMacFilterSet stack-based overflow
    32Monitor
  • CVE-2025-11550Tenda W12 HTTP Request modules wifiScheduledSet null pointer dereference
    22Monitor

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.

Variant candidates

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

  • CVE-2025-38203 days apartTenda W12/i24 httpd cgiSysUplinkCheckSet stack-based overflow
    38Monitor
  • CVE-2025-38023 days apartTenda W12/i24 httpd cgiPingSet stack-based overflow
    34Monitor
  • CVE-2025-38033 days apartTenda W12/i24 httpd cgiSysScheduleRebootSet stack-based overflow
    34Monitor
  • CVE-2025-400712 days apartTenda W12/i24 httpd modules cgidhcpsCfgSet stack-based overflow
    34Monitor
  • CVE-2025-11549176 days apartTenda W12 HTTP Request modules wifiMacFilterSet stack-based overflow
    32Monitor

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.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
X

Weakness class (CWE)

CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

ATT&CK techniques

—

Change log

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

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records