# Unicode vulnerabilities

> Unicode has 5 published vulnerabilities across 3 products in our catalogue. None of them is on the list of flaws known to be exploited today. The most affected product is International Components for Unicode, with 2. If you run Unicode software, patch the exploited flaws first.

Canonical page: https://www.precursorintelligence.com/vendors/unicode

## At a glance

- **Published vulnerabilities:** 5
- **Known to be exploited:** 0
- **Products:** 3
- **Versions:** 98

## Which Unicode products have the most vulnerabilities?

- [International Components for Unicode](https://www.precursorintelligence.com/product/unicode/international_components_for_unicode): 2 published vulnerabilities, 70 versions
- [Unicode](https://www.precursorintelligence.com/product/unicode/unicode): 2 published vulnerabilities, 0 versions
- [Unicode-JSON](https://www.precursorintelligence.com/product/unicode/unicode-json): 1 published vulnerability, 28 versions

Each product page lists its own known-exploited flaws.

## Which Unicode vulnerabilities are being exploited?

None of Unicode's published vulnerabilities is on the list of flaws known to be exploited today. We keep watching that list.

## Which Unicode 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-2021-42574](https://www.precursorintelligence.com/what-is/cve-2021-42574): 13%, High (CVSS 8.3)
- [CVE-2021-42694](https://www.precursorintelligence.com/what-is/cve-2021-42694): 4.9%, High (CVSS 8.3)
- [CVE-2020-21913](https://www.precursorintelligence.com/what-is/cve-2020-21913): 1.2%, Medium (CVSS 5.5)
- [CVE-2016-10610](https://www.precursorintelligence.com/what-is/cve-2016-10610): 0.5%, High (CVSS 8.1)
- [CVE-2025-5222](https://www.precursorintelligence.com/what-is/cve-2025-5222): 0.4%, High (CVSS 7.0)

## All Unicode products we track

2 products with at least one tracked version, most vulnerabilities first:

- [International Components for Unicode](https://www.precursorintelligence.com/product/unicode/international_components_for_unicode): 2 vulnerabilities, 70 versions
- [Unicode-JSON](https://www.precursorintelligence.com/product/unicode/unicode-json): 1 vulnerability, 28 versions

## Questions

### How many vulnerabilities does Unicode have?

Our catalogue lists 5 published vulnerabilities across 3 products and 98 versions from Unicode.

### Which Unicode vulnerabilities are being exploited?

None of Unicode's vulnerabilities is on the list of flaws known to be exploited today.

### Which Unicode product has the most vulnerabilities?

International Components for Unicode, with 2 published vulnerabilities. Its own page lists the ones known to be exploited.

### How do I get alerts for new Unicode vulnerabilities?

Create a Precursor Intelligence account and track the Unicode products you run. We match them against every published flaw, give each one a risk score from 0 to 100 and tell you as soon as we spot one that affects you, by email, in the app or by webhook.

## Running Unicode?

Precursor Intelligence keeps checking for you:

- **Tell us what you run.** Pick your software from a list, or let us work it out from your website.
- **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.

Start free (no card, nothing to install): https://www.precursorintelligence.com/register
Book a demo: https://www.precursorintelligence.com/contact

