CVE-2018-25115

high-risk
Published 2025-08-27

Multiple D-Link DIR-series routers, including DIR-110, DIR-412, DIR-600, DIR-610, DIR-615, DIR-645, and DIR-815 firmware version 1.03, contain a vulnerability in the service.cgi endpoint that allows remote attackers to execute arbitrary system commands without authentication. The flaw stems from improper input handling in the EVENT=CHECKFW parameter, which is passed directly to the system shell without sanitization. A crafted HTTP POST request can inject commands that are executed with root privileges, resulting in full device compromise. These router models are no longer supported at the time of assignment and affected version ranges may vary. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-08-21 UTC.

Do I need to act?

~
1.2% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (7)

Dir-110 Firmware
Dir-412 Firmware

Affected Vendors

Dlink

References (5)

Exploit https://github.com/Cr0n1c/dlink_shell_poc/blob/master/dlink_auth_rce
Product https://legacy.us.dlink.com/
Product https://support.dlink.com/EndOfLifePolicy.aspx
Exploit https://www.exploit-db.com/exploits/43496
Third Party Advisory https://www.vulncheck.com/advisories/dlink-dir-rce-service-cgi
50
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 4/34 · Minimal
Exposure 14/34 · Moderate