# Zywall Usg 100 vulnerabilities

> Zywall Usg 100 is made by Zyxel. We track 2 published vulnerabilities listed under that exact name, across 0 versions. 1 of them is on the list of flaws known to be exploited, the newest added on 31 May 2023. Zyxel lists newer releases under their own names, such as Zywall Usg 100 Firmware, so check those pages too.

Canonical page: https://www.precursorintelligence.com/product/zyxel/zywall_usg_100

## At a glance

- **Made by:** [Zyxel](https://www.precursorintelligence.com/vendors/zyxel)
- **Published vulnerabilities:** 2
- **Known to be exploited:** 1 (listed under the name Zywall Usg 100)
- **Versions tracked:** 0
- **Most recently added to the known-exploited list:** [CVE-2023-28771](https://www.precursorintelligence.com/what-is/cve-2023-28771), 31 May 2023. We keep watching the list.

## Is Zywall Usg 100 listed under other names?

Zyxel also lists Zywall Usg 100 under more specific names, such as Zywall Usg 100 Firmware. Flaws listed only under those names are counted on their own pages, not here.

- [Zywall Usg 100 Firmware](https://www.precursorintelligence.com/product/zyxel/zywall_usg_100_firmware): 2 published vulnerabilities

## Which Zywall Usg 100 vulnerabilities are being exploited?

1 flaw is on the government list of vulnerabilities known to be exploited, newest first:

- [CVE-2023-28771](https://www.precursorintelligence.com/what-is/cve-2023-28771): Zyxel Multiple Firewalls OS Command Injection Vulnerability. Critical, CVSS 9.8, chance of use in 30 days >99%, known exploited since 31 May 2023.

## Which Zywall Usg 100 flaws are most likely to be used?

Ranked by the latest exploit-likelihood forecast (the chance each flaw is used in an attack in the next 30 days):

- [CVE-2017-17550](https://www.precursorintelligence.com/what-is/cve-2017-17550): 0.5%, High (CVSS 8.8)

## Questions

### How many vulnerabilities does Zywall Usg 100 have?

We track 2 published vulnerabilities listed under the name Zywall Usg 100, across 0 versions. The most recent Zywall Usg 100 flaw added to the known-exploited list is CVE-2023-28771, on 31 May 2023.

### Which Zywall Usg 100 vulnerabilities are being exploited?

1 is on the list of flaws known to be exploited. The most recently added is CVE-2023-28771.

### Why are newer Zywall Usg 100 flaws missing from this page?

Zyxel also lists Zywall Usg 100 under more specific names, such as Zywall Usg 100 Firmware. Flaws listed only under those names are counted on their own pages, not here. Open the release you run to see its own list.

### How do I get alerts for Zywall Usg 100?

Create a Precursor Intelligence account and track Zywall Usg 100. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.

## Running Zywall Usg 100?

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- **We match it to every flaw.** Over 400,000 published flaws, checked against your list.
- **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it.
- **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools.

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