CVE-2017-11567

HIGH

Mongoose Embedded Web Server Library < 6.8 - Cross-Site Request Forgery via __mg_admin?save

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-11567. PoCs published by hyp3rlinx.

AI-analyzed exploit summary This exploit leverages a CSRF vulnerability in Mongoose Web Server to execute arbitrary commands via log file injection and CGI misconfiguration. It demonstrates adding a backdoor user or launching calc.exe through crafted HTTP requests and TELNET interactions.

Description

Cross-site request forgery (CSRF) vulnerability in Mongoose Web Server before 6.9 allows remote attackers to hijack the authentication of users for requests that modify Mongoose.conf via a request to __mg_admin?save. NOTE: this issue can be leveraged to execute arbitrary code remotely.

Exploits (1)

exploitdb WORKING POC
by hyp3rlinx · textremotewindows
https://www.exploit-db.com/exploits/42614

This exploit leverages a CSRF vulnerability in Mongoose Web Server to execute arbitrary commands via log file injection and CGI misconfiguration. It demonstrates adding a backdoor user or launching calc.exe through crafted HTTP requests and TELNET interactions.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Mongoose Web Server (Free Edition) v6.5
No auth needed
Prerequisites: Victim must visit a malicious page or click a link · CGI interpreter path must be known or set · Mongoose must be running in non-service mode for stable execution
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/42614/
Exploit, Mailing List, Third Party Advisory mailing-list x_refsource_fulldisc
http://seclists.org/fulldisclosure/2017/Sep/3

Scores

CVSS v3 8.8
EPSS 0.0413
EPSS Percentile 89.5%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-352
Status published
Products (1)
cesanta/mongoose_embedded_web_server_library < 6.8
Published Sep 07, 2017
Tracked Since Feb 18, 2026