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CVE-2025-10814
published 2025-09-22

CVE-2025-10814: A vulnerability was determined in D-Link DIR-823X 240126/240802/250416. Affected by this vulnerability is an unknown functionality of the file…

PriorityP270high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
6.12%
92.6th percentile
A vulnerability was determined in D-Link DIR-823X 240126/240802/250416. Affected by this vulnerability is an unknown functionality of the file /usr/sbin/goahead. This manipulation of the argument port causes command injection. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized.

Affected

6 ranges
VendorProductVersion rangeFixed in
d-linkdir-823x——
d-linkdir-823x——
d-linkdir-823x——
dlinkdir-823x_firmware——
dlinkdir-823x_firmware——
dlinkdir-823x_firmware——

Detection & IOCsextracted from sources · hover to see the quote

path/usr/sbin/goahead↗
url/goform/set_switch_settings
snort
alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS D-Link set_switch_settings port Parameter Command Injection Attempt (CVE-2025-10814)"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:27; content:"/goform/set_switch_settings"; fast_pattern; http.request_body; content:"port|3d|"; pcre:"/^[^\x26]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/R"; reference:url,github.com/W1ngyu/cve/blob/main/DIink-DIR-823xgoformset_server_settings_command_execution_vulnerability.md; reference:cve,2025-10814; classtype:attempted-admin; sid:2064882; rev:1;)
  • →Exploit traffic is HTTP POST only; match on HTTP method POST to /goform/set_switch_settings (exact URI length 27 bytes).
  • →Command injection payload is injected into the 'port' POST body parameter; look for shell metacharacters (;, newline \x0a, backtick \x60, pipe \x7c, dollar \x24) immediately following the port= value, both raw and URL-encoded.
  • →Attack is remotely initiated over plaintext HTTP (tls_state plaintext); deploy detection at perimeter and internal network boundaries.
  • →Exploit has been publicly disclosed; treat any matching traffic as high-confidence attempted admin-level compromise (MITRE T1190 - Exploit Public-Facing Application). ↗
  • ·Affected firmware versions are limited to D-Link DIR-823X builds 240126, 240802, and 250416; scope detection to these specific firmware versions to reduce false positives. ↗
  • ·The Snort/Suricata rule (sid:2064882) targets $HOME_NET as the destination; ensure $HOME_NET is correctly scoped to include D-Link DIR-823X management interfaces to avoid missed detections.

CVSS provenance

nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv4.02.1LOWCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
nvdv2.06.5MEDIUMAV:N/AC:L/Au:S/C:P/I:P/A:P
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