THREATPORT/VULNERABILITY/CVE-2026-1544
MEDIUM SEVERITY

CVE-2026-1544

Dir 823x Firmware vulnerability

CVSS
6.3
EPSS
3.3%
EPSS pct
87th
Exploited
No known
A security flaw has been discovered in D-Link DIR-823X 250416. Impacted is the function sub_41E2A0 of the file /goform/set_mode. Performing a manipulation of the argument lan_gateway results in os command injection. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. This vulnerability only affects products that are no longer supported by the maintainer.
Affected vendor
Dlink
Affected product
Dir 823x Firmware
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Weakness type (CWE)
Published
2026-01-28

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to low impact to confidentiality, low impact to integrity, low impact to availability.

Its EPSS score of 3.3% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 87% of all scored CVEs.

Check your external exposure to CVE-2026-1544

  • Confirm whether Dlink Dir 823x Firmware is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2026-1544.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2026-1544

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