CVE-2026-19893Network attack vectorHinoki check available

FTP configuration modification via incorrect permissions

Published Aug 15, 2026 · Updated Aug 15, 2026

Incorrect default permissions in D-Link DIR-842 2.01.B04 allow remote authenticated users to modify the vsftpd configuration. The firmware assigns /etc/vsftpd.conf permissions that permit a low-privileged account to change its contents, although the exact mode is undisclosed. Exploitation requires authenticated network access and high-complexity conditions, and the documented impact is limited to configuration integrity.

CVSS severity3.1
Low
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
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Summary

What happened

Incorrect default permissions in D-Link DIR-842 2.01.B04 allow remote authenticated users to modify the vsftpd configuration. The firmware assigns /etc/vsftpd.conf permissions that permit a low-privileged account to change its contents, although the exact mode is undisclosed. Exploitation requires authenticated network access and high-complexity conditions, and the documented impact is limited to configuration integrity.

The record

CVE
CVE-2026-19893
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
D-Link
Product
DIR-842
Classifications
CWE-266, CWE-276
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2026Record 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=2.01.B04

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

D-Link · DIR-842version=2.01.B04

Published CVSS scores

2.1VulDBAV:N/AC:H/Au:S/C:N/I:P/A:N
3.1VulDBCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
2.3VulDBCVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-266Incorrect Privilege Assignment
CWE-276Incorrect Default Permissions

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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