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High severity8.8NVD Advisory· Published Oct 25, 2021· Updated Jun 17, 2026

CVE-2021-34862

CVE-2021-34862

Description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-2020 1.01rc001 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the var:menu parameter provided to the webproc endpoint. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-13270.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3
  • Dlink/Dap 2020 Firmware
    cpe:2.3:o:dlink:dap-2020_firmware:*:*:*:*:*:*:*:*
    Range: <=1.01
  • Dlink/DAP-2020llm-create2 versions
    = 1.01rc001+ 1 more
    • (no CPE)range: = 1.01rc001
    • (no CPE)range: 1.01rc001

Patches

Vulnerability mechanics

References

2

News mentions

0

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