CVE-2026-4254 (GCVE-0-2026-4254)

Vulnerability from cvelistv5 – Published: 2026-03-16 17:32 – Updated: 2026-03-16 18:29
VLAI
Title
Tenda AC8 HTTP Endpoint SysToolChangePwd doSystemCmd stack-based overflow
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.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
9.8 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://vuldb.com/?id.351212 vdb-entrytechnical-description
https://vuldb.com/?ctiid.351212 signaturepermissions-required
https://vuldb.com/?submit.771773 third-party-advisory
https://github.com/digitalandrew/tenda_ac8_v5/blo… exploit
https://www.tenda.com.cn/ product
Impacted products
Vendor Product Version
Tenda AC8 Affected: 16.03.50.0
Affected: 16.03.50.1
Affected: 16.03.50.2
Affected: 16.03.50.3
Affected: 16.03.50.4
Affected: 16.03.50.5
Affected: 16.03.50.6
Affected: 16.03.50.7
Affected: 16.03.50.8
Affected: 16.03.50.9
Affected: 16.03.50.10
Affected: 16.03.50.11
    cpe:2.3:o:tenda:ac8_firmware:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
DigitalAndrew (VulDB User)
Show details on NVD website
To clipboard 

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Tags
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.