CVE-2025-61303 Denial of service in n/a
Attackers can evade malware detection and disrupt analysis by spawning recursive child processes, causing resource exhaustion in the sandbox.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-61303?
CVE-2025-61303 is a critical denial of service vulnerability in n/a, published on 20 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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: CWE-400
Which versions are affected by CVE-2025-61303?
How do I fix CVE-2025-61303?
No fix has been published for CVE-2025-61303 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-61303 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-61303 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-8rm8-qf3c-q22g.