# 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.

- **Severity:** Medium 6.7 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **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 available:** No
- **Published:** 23 Jan 2026
- **Updated:** 15 Jul 2026
- **Also known as:** GHSA-8c9p-68jv-958p

## 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 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2021-47895?

It affects 1 product.


Products: 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.

## 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](https://insights.sbomify.com/CVE-2018-25213/): Nsauditor 3.0.28.0 Local SEH Buffer Overflow (high 8.6)
- [CVE-2020-37119](https://insights.sbomify.com/CVE-2020-37119/): Nsauditor 3.2.1.0 - Buffer Overflow (SEH+ASLR bypass (3 bytes overwrite)) (high 8.4)
- [CVE-2019-25597](https://insights.sbomify.com/CVE-2019-25597/): NSauditor 3.1.2.0 Denial of Service via Community Field (medium 6.9)
- [CVE-2020-37130](https://insights.sbomify.com/CVE-2020-37130/): Nsauditor 3.2.0.0 - 'Name' Denial of Service (medium 6.7)
- [CVE-2021-47815](https://insights.sbomify.com/CVE-2021-47815/): Nsauditor 3.2.3 - Denial of Service (PoC) (medium 6.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-47895 and fix it if it is affected.

What it is: 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.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47895 exists.

Affected product: Nsauditor. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-47895/ (Markdown: https://insights.sbomify.com/CVE-2021-47895/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-47895
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-47895
- OSV: https://osv.dev/vulnerability/CVE-2021-47895

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-47895/
Summaries are generated and may contain mistakes; the official description above is the record.