CVE-2023-32152

Authentication bypass via crafted HNAP login request

Published May 3, 2024 · Updated Sep 18, 2024

Authentication bypass in D-Link DIR-2640 firmware 1.11B02 and earlier allows remote attackers to gain management access over the adjacent network. The TCP port 80 web interface treats a specially crafted HNAP LoginPassword request as authenticated without validating proper credentials. No account is required, and successful exploitation crosses the management authentication gate and permits authenticated router-management actions.

CVSS severity6.5
Medium
EPSS probability28.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in D-Link DIR-2640 firmware 1.11B02 and earlier allows remote attackers to gain management access over the adjacent network. The TCP port 80 web interface treats a specially crafted HNAP LoginPassword request as authenticated without validating proper credentials. No account is required, and successful exploitation crosses the management authentication gate and permits authenticated router-management actions.

The record

CVE
CVE-2023-32152
Published
May 3, 2024
Updated
Sep 18, 2024
Vendor
D-Link
Product
DIR-2640
Classifications
CWE-303, 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 <=v1.11B02
  2. Affected versionversion=0 <=v1.11B02 Beta01
  3. Affected versionversion=1.11B02 (non-US, CA version)

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

D-Link · DIR-2640version=0 <=v1.11B02; version=0 <=v1.11B02 Beta01; version=1.11B02 (non-US, CA version)

Published CVSS scores

6.5Zero Day InitiativeCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-303Incorrect Implementation of Authentication Algorithm
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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