CVE-2019-1083

HIGH

.NET Framework - Denial of Service via Improper Web Request Handling

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2019-1083. PoCs published by stevenseeley.

AI-analyzed exploit summary This repository contains a functional proof-of-concept exploit for CVE-2019-1083, demonstrating arbitrary code execution via Exchange Server's FastManagementClient. The exploit leverages .NET assembly loading to instantiate a malicious gadget (RCEGadget) that executes arbitrary commands (e.g., launching calc.exe).

Description

A denial of service vulnerability exists when Microsoft Common Object Runtime Library improperly handles web requests, aka '.NET Denial of Service Vulnerability'.

Exploits (1)

nomisec WORKING POC 3 stars
by stevenseeley · poc
https://github.com/stevenseeley/HowCVE-2019-1083Works

This repository contains a functional proof-of-concept exploit for CVE-2019-1083, demonstrating arbitrary code execution via Exchange Server's FastManagementClient. The exploit leverages .NET assembly loading to instantiate a malicious gadget (RCEGadget) that executes arbitrary commands (e.g., launching calc.exe).

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Exchange Server (likely 2013/2016/2019)
No auth needed
Prerequisites: Access to Exchange Server with vulnerable FastManagementClient · Ability to place malicious DLL in a reachable path
devstral-2 · analyzed Feb 19, 2026 Full analysis →

References (1)

Core 1
Core References

Scores

CVSS v3 7.5
EPSS 0.0780
EPSS Percentile 93.9%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-19
Status published
Products (12)
microsoft/.net_framework 2.0 sp2
microsoft/.net_framework 3.0 sp2
microsoft/.net_framework 3.5
microsoft/.net_framework 4.7.2
microsoft/.net_framework 4.8
microsoft/.net_framework 3.5.1
microsoft/.net_framework 4.5.2
microsoft/.net_framework 4.6
microsoft/.net_framework 4.6.1
microsoft/.net_framework 4.6.2
... and 2 more
Published Jul 15, 2019
Tracked Since Feb 18, 2026