Trending
CVE-2025-52221

CVE detail

CVE-2025-52221

Tenda AC6 15.03.05.16_multi is vulnerable to Buffer Overflow in the formSetCfm function via the funcname, funcpara1, and funcpara2 parameters.

CVSS 9.8 · CriticalBuzz score 20.51 public exploit repository references

Buzz score

Why this CVE is surfacing

Buzz score total 20.5

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 11.0 · diversity 5.0 · KEV 0.0 · OTX 0.0 · PoC 4.5

Mention score

11.0

2 evidence mentions in the snapshot

Diversity score

5.0

1 sources across 1 categories

KEV score

0.0

No KEV entry observed

OTX score

0.0

0 OTX pulses

PoC score

4.5

1 repos · best confidence 0.90

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 0; within the 30d window
Peak daily: 0; highest bucket

Evidence

Source links by recency

Newest mentions first

2 source links · newest first

https://github.com/xiaotea/iot-vulnerability-collection/blob/main/README.mdgithub.com
No excerpt available.
Exploitgithub.comApr 8, 2026, 6:24 PM
https://github.com/faqiadegege/IoTVuln/blob/main/tendaAc6_formSetCfm_funcname_overflow/detail.mdgithub.com
No excerpt available.
Exploitgithub.comApr 8, 2026, 6:24 PM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

1 repository references · best confidence 0.90 · max 0 stars

faqiadegege/IoTVulnHigh confidence
githubNVD Exploit reference0 starsDiscovered Jul 25, 2026, 12:10 PM
NVD labels the source link as Exploit; this is not independent verification of the repository's code.

Related records

Similar CVEs

6 related CVEs with shared weakness or product evidence

CVE-2025-60339
Multiple buffer overflow vulnerabilities in the openSchedWifi function of Tenda AC6 v.15.03.06.50 allows attackers to cause a Denial of Service (DoS) via injecting a crafted paylo…
CVSS 7.5 · High
CVE-2025-60337
Tenda AC6 V2.0 15.03.06.50 was discovered to contain a buffer overflow in the speed_dir parameter in the SetSpeedWan function. This vulnerability allows attackers to cause a Denia…
CVSS 7.5 · High
CVE-2026-4961
A vulnerability was identified in Tenda AC6 15.03.05.16. Affected by this vulnerability is the function formQuickIndex of the file /goform/QuickIndex of the component POST Request…
CVSS 7.4 · High
5 mentions
CVE-2026-4960
A vulnerability was determined in Tenda AC6 15.03.05.16. Affected is the function fromWizardHandle of the file /goform/WizardHandle of the component POST Request Handler. Executin…
CVSS 7.4 · High
5 mentions
CVE-2025-60343
Multiple buffer overflows in the AdvSetMacMtuWan function of Tenda AC6 v.15.03.06.50 allows attackers to cause a Denial of Service (DoS) via injecting a crafted payload into the w…
CVSS 7.5 · High
CVE-2025-60342
Tenda AC6 V2.0 15.03.06.50 was discovered to contain a stack overflow in the page parameter in the addressNat function. This vulnerability allows attackers to cause a Denial of Se…
CVSS 7.5 · High

External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2025-52221.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

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Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

cpe:2.3:h:tenda:ac6Search this product on Shodan
cpe:2.3:o:tenda:ac6_firmwareSearch this product on Shodan

Exact CVE query

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Shodan's exact vuln: filter is separate from the product searches above and requires an eligible paid Shodan plan.

vuln:CVE-2025-52221Search this CVE on Shodan

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Metadata

Canonical fields

NVD status

Analyzed

Published

Apr 8, 2026

Modified

Jul 25, 2026

Official record

Authoritative NVD record

CVSS vector

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

CWE IDs

Vendor classifications

How this vector reads

CVSS 3.1 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Attack Vector (AV): Network. The vulnerable system can be reached across network boundaries.
Attack Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Privileges Required (PR): None. The attacker needs no privileges on the vulnerable system.
User Interaction (UI): None. Exploitation does not require another user to act.
Scope (S): Unchanged. Impacts remain within the vulnerable security authority.
Confidentiality Impact (C): High. There is a total or serious impact to this security property.
Integrity Impact (I): High. There is a total or serious impact to this security property.
Availability Impact (A): High. There is a total or serious impact to this security property.

Signals

Exploitation indicators

0 stored signals · no KEV · 0 OTX pulses