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PatchSiren cyber security CVE debrief

CVE-2026-11492 D-Link CVE debrief

A security flaw has been discovered in D-Link DIR-823G 1.0.2B05, specifically in the vsftpd component. This flaw leads to a least privilege violation and can be exploited remotely. The Common Vulnerability Scoring System (CVSS) score for this vulnerability is 2.1, indicating a low severity.

Vendor
D-Link
Product
DIR-823G
CVSS
LOW 2.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-08
Original CVE updated
2026-07-23
Advisory published
2026-06-08
Advisory updated
2026-07-23

Who should care

Administrators and users of D-Link DIR-823G 1.0.2B05 devices should be aware of this vulnerability and take necessary precautions to mitigate the risk.

Technical summary

The vulnerability is caused by an unknown function in the /etc/vsftpd.conf file of the vsftpd component. An attacker can manipulate this function to achieve a least privilege violation. The attack can be initiated remotely, and the exploit has been released to the public.

Defensive priority

Low

Recommended defensive actions

  • Update to the latest firmware version if available.
  • Restrict access to the vsftpd component.
  • Monitor for suspicious activity on the device.

Evidence notes

The CVE record for this vulnerability can be found at [cve-org]. The NVD detail page for this vulnerability is available at [nvd].

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11492 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11492

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-11492 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11492

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.