CVE-2021-47815 Nsauditor 3.2.3 - Denial of Service (PoC)
Attackers can crash the Nsauditor application by pasting a large buffer into the registration key field, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-47815?
CVE-2021-47815 is a medium-severity denial of service vulnerability in Nsauditor, published on 15 Jan 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Nsauditor 3.2.3 contains a denial of service vulnerability in the registration code input field that allows attackers to crash the application. Attackers can paste a large buffer of 256 repeated characters into the 'Key' field to trigger an application crash.
Weakness: CWE-120
Which versions are affected by CVE-2021-47815?
It affects 1 product.
Products include Nsasoft Nsauditor.
How do I fix CVE-2021-47815?
No fix has been published for CVE-2021-47815 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-2021-47815 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47815 exists.
Other vulnerabilities in Nsauditor
- CVE-2018-25213 Nsauditor 3.0.28.0 Local SEH Buffer Overflow
- CVE-2020-37119 Nsauditor 3.2.1.0 - Buffer Overflow (SEH+ASLR bypass (3 bytes overwrite))
- CVE-2019-25597 NSauditor 3.1.2.0 Denial of Service via Community Field
- CVE-2020-37130 Nsauditor 3.2.0.0 - 'Name' Denial of Service
- CVE-2021-47895 Nsauditor 3.2.2.0 - 'Event Description' Denial of Service
Sources
Also known as GHSA-649f-v3rg-phwg.