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    CVE-2026-5021

    A flaw has been found in Tenda F453 1.0.0.3. This affects the function fromPPTPUserSetting of the file /goform/PPTPUserSetting of the component httpd. This manipulation of the argument delno causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been published and may be used.

    Published:Mar 29, 2026
    Last Modified:Mar 30, 2026
    EPS:Mar 29, 2026
    EPSS Score:0.00046
    CVSS Score:8.8

    Affected Products

    Vendor
    Tenda
    Product
    F453
    Vendor
    Tenda
    Product
    F453 Firmware

    Exploits

    https://github.com/Litengzheng/vul_db/blob/main/F453/vul_92/README.md

    Related CVEs

    CVE-2026-6989 (CVSS 2.1) — A vulnerability has been found in Tenda F453 up to 1.0.0.3. Impacted is the function TendaTelnet of the file /…
    CVE-2026-4554 (CVSS 2.1) — A security flaw has been discovered in Tenda F453 1.0.0.3. The affected element is the function FormWriteFacMa…
    CVE-2026-4553 (CVSS 7.4) — A vulnerability was identified in Tenda F453 1.0.0.3. Impacted is the function fromNatlimit of the file /gofor…
    CVE-2026-4552 (CVSS 7.4) — A vulnerability was determined in Tenda F453 1.0.0.3. This issue affects the function fromVirtualSer of the fi…
    CVE-2026-4551 (CVSS 7.4) — A vulnerability was found in Tenda F453 1.0.0.3. This vulnerability affects the function fromSafeClientFilter …
    CVE-2026-3769 (CVSS 7.4) — A vulnerability was detected in Tenda F453 1.0.0.3. Affected by this issue is the function WrlclientSet of the…
    CVE-2026-3768 (CVSS 7.4) — A security vulnerability has been detected in Tenda F453 1.0.0.3. Affected by this vulnerability is the functi…
    CVE-2026-3732 (CVSS 7.4) — A security vulnerability has been detected in Tenda F453 1.0.0.3. This affects the function strcpy of the file…
    CVE-2026-3729 (CVSS 7.4) — A vulnerability was identified in Tenda F453 1.0.0.3/3.As. Impacted is the function fromPptpUserAdd of the fil…
    CVE-2026-3728 (CVSS 7.4) — A vulnerability was determined in Tenda F453 1.0.0.3/1.If. This issue affects the function fromSetCfm of the f…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High