CVE-2025-61303

CRITICAL

Hatching Triage Sandbox Windows 10 build 2004 and LTSC 2021 - Denial-of-Analysis via Recursive Child Process Spawning

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2025-61303. PoCs published by adminlove520, eGkritsis.

AI-analyzed exploit summary The repository contains a scanner for CVE-2024-21762, which checks for the presence of the vulnerability in Fortinet SSL VPN interfaces. It includes Python scripts that send crafted HTTP requests to detect if a target is vulnerable.

Description

Hatching Triage Sandbox Windows 10 build 2004 (2025-08-14) and Windows 10 LTSC 2021(2025-08-14) contains a vulnerability in its Windows behavioral analysis engine that allows a submitted malware sample to evade detection and cause denial-of-analysis. The vulnerability is triggered when a sample recursively spawns a large number of child processes, generating high log volume and exhausting system resources. As a result, key malicious behavior, including PowerShell execution and reverse shell activity, may not be recorded or reported, misleading analysts and compromising the integrity and availability of sandboxed analysis results.

Exploits (2)

github SCANNER 2 stars
by adminlove520 · pythonpoc
https://github.com/adminlove520/CVE-Poc_All_in_One/tree/main/2025/CVE-2025-61303

The repository contains a scanner for CVE-2024-21762, which checks for the presence of the vulnerability in Fortinet SSL VPN interfaces. It includes Python scripts that send crafted HTTP requests to detect if a target is vulnerable.

Classification
Scanner 90%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Fortinet SSL VPN
No auth needed
Prerequisites: network access to the target Fortinet SSL VPN interface
devstral-2 · analyzed Feb 27, 2026 Full analysis →
nomisec WORKING POC 2 stars
by eGkritsis · poc
https://github.com/eGkritsis/CVE-2025-61303

This PoC demonstrates a denial-of-analysis vulnerability in RecordedFuture Triage's Windows behavioral analysis engine by recursively spawning child processes to exhaust system resources, leading to incomplete or missing telemetry. The exploit culminates in a PowerShell reverse-shell stage, which is not recorded in vulnerable configurations.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: RecordedFuture Triage (Dynamic Analysis Platform) - Windows Behavioral Analysis Engine
No auth needed
Prerequisites: Access to submit a malware sample to RecordedFuture Triage · A vulnerable Windows 10 sandbox environment (build 2004 or LTSC 2021)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References

Scores

CVSS v3 9.8
EPSS 0.0038
EPSS Percentile 29.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-400
Status published
Published Oct 20, 2025
Tracked Since Feb 18, 2026