CVE-2025-2359Network attack vector

Unauthorized DDNS modification via manipulated SOAPAction

Published Mar 17, 2025 · Updated Mar 17, 2025

Improper authorization in D-Link DIR-823G 1.0.2B05_20181207 allows remote attackers to modify DDNS settings through HNAP1 requests. The SetDDNSSettings handler at /HNAP1/ accepts a manipulated SOAPAction value without correctly enforcing authorization before applying DDNS configuration changes. No authentication or user interaction is required; the bounded consequence is unauthorized modification of the router's DDNS configuration.

CVSS severity9.8
Critical
EPSS probability15.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in D-Link DIR-823G 1.0.2B05_20181207 allows remote attackers to modify DDNS settings through HNAP1 requests. The SetDDNSSettings handler at /HNAP1/ accepts a manipulated SOAPAction value without correctly enforcing authorization before applying DDNS configuration changes. No authentication or user interaction is required; the bounded consequence is unauthorized modification of the router's DDNS configuration.

The record

CVE
CVE-2025-2359
Published
Mar 17, 2025
Updated
Mar 17, 2025
Vendor
D-Link
Product
DIR-823G
Classifications
CWE-266, CWE-285, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 17, 2025Record 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=1.0.2B05_20181207

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

D-Link · DIR-823Gversion=1.0.2B05_20181207

Published CVSS scores

7.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5VulDB CNAAV:N/AC:L/Au:N/C:P/I:P/A:P
6.9VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA: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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-266Incorrect Privilege Assignment
CWE-285Improper Authorization
T1190Exploit Public-Facing Application

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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