FKIE_CVE-2026-4254

Vulnerability from fkie_nvd - Published: 2026-03-16 18:16 - Updated: 2026-03-20 13:35
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
A weakness has been identified in Tenda AC8 up to 16.03.50.11. This vulnerability affects the function doSystemCmd of the file /goform/SysToolChangePwd of the component HTTP Endpoint. This manipulation of the argument local_2c causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.
References
cna@vuldb.comhttps://github.com/digitalandrew/tenda_ac8_v5/blob/main/CVE_Report_Tenda_AC8_SysToolChangePwd_BOF.mdExploit, Third Party Advisory
cna@vuldb.comhttps://vuldb.com/?ctiid.351212Permissions Required, VDB Entry
cna@vuldb.comhttps://vuldb.com/?id.351212Third Party Advisory, VDB Entry
cna@vuldb.comhttps://vuldb.com/?submit.771773Third Party Advisory, VDB Entry
cna@vuldb.comhttps://www.tenda.com.cn/Product
Impacted products
Vendor Product Version
tenda ac8_firmware *
tenda ac8 5.0
To clipboard 

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      "value": "Se ha identificado una debilidad en Tenda AC8 hasta la versi\u00f3n 16.03.50.11. Esta vulnerabilidad afecta a la funci\u00f3n doSystemCmd del archivo /goform/SysToolChangePwd del componente Endpoint HTTP. Esta manipulaci\u00f3n del argumento local_2c causa un desbordamiento de b\u00fafer basado en pila. El ataque puede iniciarse remotamente. El exploit se ha puesto a disposici\u00f3n del p\u00fablico y podr\u00eda usarse para ataques."
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  "id": "CVE-2026-4254",
  "lastModified": "2026-03-20T13:35:42.853",
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          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
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Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.