ScreenOS vulnerabilities: known CVEs & security history
Juniper · Actively exploited · 9 tracked CVEs · 0 actively exploited · updated June 2026 · what is a CVE? →
This is the full list of known vulnerabilities (CVEs) across all ScreenOS release lines — 9 in total. A CVE here doesn't mean your version is affected — check ScreenOS's current status and the safe version to run.
Known ScreenOS CVEs
Actively-exploited and most-severe first. Open any CVE for full details.
| CVE | Severity | CVSS | EPSS | Year |
|---|---|---|---|---|
| CVE-2018-0059 | medium | 5.4 | 1% | 2018 |
| CVE-2005-2640 | medium | 5 | 7% | 2005 |
| CVE-2004-1446 | medium | 5 | 3% | 2004 |
| CVE-2002-1547 | medium | 5 | 4% | 2003 |
| CVE-2002-2150 | medium | 5 | 2% | 2002 |
| CVE-2002-0891 | medium | 5 | 2% | 2002 |
| CVE-2008-6096 | medium | 4.3 | 1% | 2009 |
| CVE-2002-0234 | low | 2.1 | 0% | 2002 |
| CVE-2001-0589 | low | 2.1 | 0% | 2001 |
Is my ScreenOS version affected?
The list above spans every release. To know whether your version is affected — and the minimum safe version to upgrade to — check it directly.
Check your ScreenOS version → · Monitor ScreenOS for new CVEs →
ScreenOS vulnerabilities — frequently asked
How many known vulnerabilities does ScreenOS have?
IsItPatched tracks 9 CVEs for ScreenOS. 0 are critical-severity and 0 high-severity. These span every release line — what matters is whether the version you run is affected.
Does ScreenOS have any actively-exploited vulnerabilities?
None of ScreenOS's tracked CVEs are currently in CISA's KEV catalog — but new ones can be added at any time, so keep your version current.
What is the most severe ScreenOS vulnerability?
Among tracked issues, CVE-2018-0059 (MEDIUM, CVSS 5.4) ranks highest — a Cross-site scripting (XSS) weakness.
Is ScreenOS safe to use?
It depends on the version. The latest supported ScreenOS release clears the known issues; older versions may still be affected. Check the exact version you run for a verdict.
CVE data aggregated from NVD, CISA KEV and EPSS (FIRST.org). Related: ScreenOS security status · ScreenOS end-of-life · actively-exploited CVEs. Always verify against Juniper's advisories — see our disclaimer.