What is CVE-2018-25120?

CVE-2018-25120 is a critical-severity vulnerability in D-Link Dns-343 Sharecenter, classified under OS Command Injection. CVSS score: 9.8/10. Published 2025-10-29.

How severe is CVE-2018-25120?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in D-Link Dns-343 Sharecenter

CVE-2018-25120

D-Link DNS-343 ShareCenter devices running firmware versions up to and including 1.05 contain a command injection vulnerability in the Mail Test functionality. The web maintenance script posts to the internal goForm endpoint '/goform/Mail_Test' and uses several form parameters directly in a call to a system email utility without proper input validation. An unauthenticated remote attacker can supply crafted form data that injects shell commands, resulting in execution as root on the device. NOTE: The DNS-343 product line has been declared end-of-life.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.098 (95.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

disclosure@vulncheck.com (Exploit, exploit)
disclosure@vulncheck.com (Third Party Advisory, exploit)
disclosure@vulncheck.com (Product, product)
disclosure@vulncheck.com (technical-description, Third Party Advisory, exploit)
disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2018-25120?: CVE-2018-25120 is a critical-severity vulnerability in D-Link Dns-343 Sharecenter, classified under OS Command Injection. CVSS score: 9.8/10. Published 2025-10-29.
How severe is CVE-2018-25120?: Critical severity. CVSS v3 base score is 9.8 out of 10.