CVE-2018-19861

CRITICAL

minishare < 1.4.1 - Remote Code Execution via Long HTTP HEAD Request

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-19861. PoCs published by Rafael Pedrero.

AI-analyzed exploit summary This exploit demonstrates a buffer overflow vulnerability in MiniShare 1.4.1 via a long HTTP POST request, leading to remote code execution. It uses an egghunter technique to locate and execute shellcode due to limited space in the ESP register.

Description

Buffer overflow in MiniShare 1.4.1 and earlier allows remote attackers to execute arbitrary code via a long HTTP HEAD request. NOTE: this product is discontinued.

Exploits (1)

exploitdb WORKING POC
by Rafael Pedrero · textremotewindows
https://www.exploit-db.com/exploits/45999

This exploit demonstrates a buffer overflow vulnerability in MiniShare 1.4.1 via a long HTTP POST request, leading to remote code execution. It uses an egghunter technique to locate and execute shellcode due to limited space in the ESP register.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: MiniShare v1.4.1
No auth needed
Prerequisites: Network access to the target MiniShare server · MiniShare 1.4.1 or earlier running on Windows
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit, Third Party Advisory, VDB Entry x_refsource_misc
http://packetstormsecurity.com/files/150689/MiniShare-1.4.1-HEAD-POST-Buffer-Overflow.html
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/45999/
Exploit, Mailing List, Third Party Advisory mailing-list x_refsource_fulldisc
http://seclists.org/fulldisclosure/2018/Dec/19

Scores

CVSS v3 9.8
EPSS 0.1255
EPSS Percentile 95.7%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-119
Status published
Products (1)
minishare_project/minishare < 1.4.1
Published Jan 03, 2019
Tracked Since Feb 18, 2026