CVE-2021-47895 Nsauditor 3.2.2.0 - 'Event Description' Denial of Service
Attackers can crash the Nsauditor application by inputting a large buffer into the Event Description 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-2021-47895?
CVE-2021-47895 is a medium-severity denial of service vulnerability in Nsauditor, published on 23 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 3.2.2.0 contains a denial of service vulnerability that allows attackers to crash the application by overwriting the Event Description field with a large buffer. Attackers can generate a 10,000-character 'U' buffer and paste it into the Event Description field to trigger an application crash.
Weakness: CWE-770
Which versions are affected by CVE-2021-47895?
It affects 1 product.
Products include Nsasoft Nsauditor.
How do I fix CVE-2021-47895?
No fix has been published for CVE-2021-47895 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-2021-47895 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47895 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-2021-47815 Nsauditor 3.2.3 - Denial of Service (PoC)
Sources
Also known as GHSA-8c9p-68jv-958p.