# Screenos vulnerabilities > Screenos is made by Juniper. We track 16 published vulnerabilities in it, across 38 versions. 1 of them is on the list of flaws known to be exploited, the newest added on 2 October 2025. If you run Screenos, check your version against the exploited flaws below and patch those first. Canonical page: https://www.precursorintelligence.com/product/juniper/screenos ## At a glance - **Made by:** [Juniper](https://www.precursorintelligence.com/vendors/juniper) - **Published vulnerabilities:** 16 - **Known to be exploited:** 1 - **Versions tracked:** 38 - **Most recently added to the known-exploited list:** [CVE-2015-7755](https://www.precursorintelligence.com/what-is/cve-2015-7755), 2 October 2025. We keep watching the list. ## Which versions of Screenos do the exploited flaws hit? Each exploited flaw lists the versions it affects, as published. - [CVE-2015-7755](https://www.precursorintelligence.com/what-is/cve-2015-7755) (Juniper ScreenOS Improper Authentication Vulnerability): 6.3.0-r17, 6.3.0-r18, 6.3.0-r19, 6.3.0-r20 ## Which Screenos vulnerabilities are being exploited? 1 flaw is on the government list of vulnerabilities known to be exploited, newest first: - [CVE-2015-7755](https://www.precursorintelligence.com/what-is/cve-2015-7755): Juniper ScreenOS Improper Authentication Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 61%, known exploited since 2 October 2025. ## Which Screenos 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-2015-7755](https://www.precursorintelligence.com/what-is/cve-2015-7755): 61%, Critical (CVSS 9.8), known exploited - [CVE-2015-7754](https://www.precursorintelligence.com/what-is/cve-2015-7754): 3.9%, High (CVSS 8.1) - [CVE-2014-2842](https://www.precursorintelligence.com/what-is/cve-2014-2842): 3.6%, High (CVSS 7.8) - [CVE-2015-7756](https://www.precursorintelligence.com/what-is/cve-2015-7756): 2.5%, Medium (CVSS 5.0) - [CVE-2015-7750](https://www.precursorintelligence.com/what-is/cve-2015-7750): 2.0%, Medium (CVSS 5.0) - [CVE-2016-1268](https://www.precursorintelligence.com/what-is/cve-2016-1268): 1.9%, High (CVSS 7.5) - [CVE-2013-6958](https://www.precursorintelligence.com/what-is/cve-2013-6958): 1.9%, High (CVSS 7.1) - [CVE-2014-3814](https://www.precursorintelligence.com/what-is/cve-2014-3814): 1.3%, High (CVSS 7.8) - [CVE-2014-3813](https://www.precursorintelligence.com/what-is/cve-2014-3813): 1.3%, High (CVSS 7.8) - [CVE-2017-2336](https://www.precursorintelligence.com/what-is/cve-2017-2336): 1.2%, Critical (CVSS 9.6) ## Questions ### How many vulnerabilities does Screenos have? We track 16 published vulnerabilities listed under the name Screenos, across 38 versions. The most recent Screenos flaw added to the known-exploited list is CVE-2015-7755, on 2 October 2025. ### Which Screenos vulnerabilities are being exploited? 1 is on the list of flaws known to be exploited. The most recently added is CVE-2015-7755. ### Which versions of Screenos do the exploited flaws affect? Each flaw names its own versions, usually as ranges. The newest, CVE-2015-7755, affects 6.3.0-r17, 6.3.0-r18, 6.3.0-r19, 6.3.0-r20. The versions for every exploited flaw are listed on this page. ### How do I get alerts for Screenos? Create a Precursor Intelligence account and track Screenos. 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 Screenos? 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