CVE-2025-52079Public exploitNetwork attack vector

Administrator takeover via unauthenticated password change

Published Oct 21, 2025 · Updated Oct 22, 2025

Improper access control in D-Link DIR-820L 1.06B02 allows remote attackers to change the administrator password via a crafted LAN-side request. The ncc2 service accepts configuration changes at /get_set.ccp without verifying user identity and writes the supplied password to /var/tmp/cfg.txt. LAN access is sufficient to replace the administrator credential and then authenticate to the router's management account.

CVSS severity8.8
High
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in D-Link DIR-820L 1.06B02 allows remote attackers to change the administrator password via a crafted LAN-side request. The ncc2 service accepts configuration changes at /get_set.ccp without verifying user identity and writes the supplied password to /var/tmp/cfg.txt. LAN access is sufficient to replace the administrator credential and then authenticate to the router's management account.

The record

CVE
CVE-2025-52079
Published
Oct 21, 2025
Updated
Oct 22, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-284, T1098
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 22, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
T1098Account Manipulation

Public exploit references

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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