# CVE-2019-25547: NetAware 1.20 Denial of Service via Add Block Buffer Overflow

> Local attackers can crash NetAware by pasting oversized input into the website filtering field, causing a buffer overflow.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/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:** Not needed
- **Fix available:** No
- **Published:** 21 Mar 2026
- **Updated:** 23 Mar 2026
- **Also known as:** GHSA-qg4x-9553-5gfm

## What is CVE-2019-25547?

CVE-2019-25547 is a medium-severity memory corruption vulnerability in Infiltration-Systems NetAware, published on 21 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

NetAware 1.20 contains a buffer overflow vulnerability in the User Blocking feature that allows local attackers to crash the application by supplying oversized input. Attackers can paste a malicious buffer of 512 bytes into the 'Add a website or keyword to be filtered' field and trigger a crash when removing the created block.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2019-25547?

It affects 1 product.


Products: Spytech-Web Netaware.

## How do I fix CVE-2019-25547?

No fix has been published for CVE-2019-25547 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-25547 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25547 exists.

## Other vulnerabilities in Infiltration-Systems NetAware

- [CVE-2019-25546](https://insights.sbomify.com/CVE-2019-25546/): NetAware 1.20 Share Name Denial of Service (medium 6.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-25547 and fix it if it is affected.

What it is: CVE-2019-25547 is a medium-severity memory corruption vulnerability in Infiltration-Systems NetAware, published on 21 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25547 exists.

Affected product: Infiltration-Systems NetAware. 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-2019-25547/ (Markdown: https://insights.sbomify.com/CVE-2019-25547/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-25547
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-25547
- OSV: https://osv.dev/vulnerability/CVE-2019-25547

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-25547/
Summaries are generated and may contain mistakes; the official description above is the record.