CVE-2023-35735

Root code execution via New Username overflow

Published May 3, 2024 · Updated Sep 18, 2024

Stack-based buffer overflow in D-Link DAP-2622 firmware 1.00 and earlier allows remote attackers to execute code as root. The DDP Change ID Password handler copies an attacker-controlled New Username value into a fixed-length stack buffer without validating its length. No authentication or user interaction is required, but the attacker must have adjacent-network access to the device.

CVSS severity8.8
High
EPSS probability1.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in D-Link DAP-2622 firmware 1.00 and earlier allows remote attackers to execute code as root. The DDP Change ID Password handler copies an attacker-controlled New Username value into a fixed-length stack buffer without validating its length. No authentication or user interaction is required, but the attacker must have adjacent-network access to the device.

The record

CVE
CVE-2023-35735
Published
May 3, 2024
Updated
Sep 18, 2024
Vendor
D-Link
Product
DAP-2622 Firmware
Classifications
CWE-121, T1210
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.00

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

D-Link · DAP-2622 Firmwareversion=0 <=1.00
D-Link · DAP-2622version=1.00 dated 16-12-2020

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8Zero Day InitiativeCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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