CVE-2025-61303

CRITICAL 1 PoC
INFO Priority: 0.04 BB Relevance: 90/100
Published: 2025-10-20 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: High
A: High

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.

Weakness Classification (1)

References & Advisories (1)

Proof of Concept (1)

Bug Bounty Relevance

90 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction
✓ PoC available (1)

CVSS Score

9.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.46%
Raw Score 0.004550
Percentile 40.1%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00455
2026-11-13
0.00455
2026-11-12
0.00455
2026-11-10
0.00455
2026-11-09
0.00455
2026-11-08
0.00455
2026-11-07
0.00455
2026-11-06
0.00455
2026-11-05
0.00455

Intelligence Sources

nvd ref →