CVE-2023-34282

Network-adjacent authentication bypass via crafted HNAP header

Published May 3, 2024 · Updated Aug 2, 2024

Authentication bypass in D-Link DIR-2150 firmware 1.05B01 allows network-adjacent attackers to access protected functions via HNAP. The SOAP API on TCP port 80 accepts a crafted authentication header as valid without proper credentials. The interface listens by default, so an attacker able to reach the router's local network can bypass access control and invoke protected SOAP actions.

CVSS severity8.8
High
EPSS probability1.11%
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-2150 firmware 1.05B01 allows network-adjacent attackers to access protected functions via HNAP. The SOAP API on TCP port 80 accepts a crafted authentication header as valid without proper credentials. The interface listens by default, so an attacker able to reach the router's local network can bypass access control and invoke protected SOAP actions.

The record

CVE
CVE-2023-34282
Published
May 3, 2024
Updated
Aug 2, 2024
Vendor
D-Link
Product
DIR-2150
Classifications
CWE-303, CAPEC-90, T1190
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=1.05b01
  2. Affected versionversion=1.05B01

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

D-Link · DIR-2150version=1.05b01; version=1.05B01

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-303Incorrect Implementation of Authentication Algorithm
CAPEC-90Reflection Attack in Authentication Protocol
T1190Exploit Public-Facing Application

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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