Plex Media Server vulnerabilities: known CVEs & security history
Plex · Media · 14 tracked CVEs · 1 actively exploited · updated June 2026 · what is a CVE? →
This is the full list of known vulnerabilities (CVEs) across all Plex Media Server release lines — 14 in total, with 1 actively exploited in the wild. A CVE here doesn't mean your version is affected — check Plex Media Server's current status and the safe version to run.
Known Plex Media Server CVEs
Actively-exploited and most-severe first. Open any CVE for full details.
| CVE | Severity | CVSS | EPSS | Year |
|---|---|---|---|---|
| CVE-2020-5741⚡ exploited | high | 7.2 | 73% | 2020 |
| CVE-2018-13415 | critical | 9.8 | 32% | 2018 |
| CVE-2020-5742 | high | 8.8 | 1% | 2020 |
| CVE-2019-19141 | high | 8.8 | 4% | 2019 |
| CVE-2025-69414 | high | 8.5 | 0% | 2026 |
| CVE-2020-5740 | high | 7.8 | 1% | 2020 |
| CVE-2021-33959 | high | 7.5 | 15% | 2023 |
| CVE-2014-9304 | high | 7.5 | 8% | 2014 |
| CVE-2025-69415 | high | 7.1 | 0% | 2026 |
| CVE-2021-42835 | high | 7 | 1% | 2021 |
| CVE-2018-21031 | medium | 6.5 | 2% | 2019 |
| CVE-2025-69417 | medium | 5 | 0% | 2026 |
| CVE-2025-69416 | medium | 5 | 0% | 2026 |
| CVE-2014-9181 | medium | 5 | 9% | 2014 |
Is my Plex Media Server 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 Plex Media Server version → · Monitor Plex Media Server for new CVEs →
Plex Media Server vulnerabilities — frequently asked
How many known vulnerabilities does Plex Media Server have?
IsItPatched tracks 14 CVEs for Plex Media Server, 1 of which is actively exploited (CISA KEV). 1 is critical-severity and 9 high-severity. These span every release line — what matters is whether the version you run is affected.
Does Plex Media Server have any actively-exploited vulnerabilities?
Yes — 1 Plex Media Server CVE is in CISA's Known Exploited Vulnerabilities catalog, meaning it is confirmed exploited in the wild. Patch it as a priority.
What is the most severe Plex Media Server vulnerability?
Among tracked issues, CVE-2020-5741 (HIGH, CVSS 7.2), which is actively exploited, ranks highest — a Insecure deserialization weakness.
Is Plex Media Server safe to use?
It depends on the version. The latest supported Plex Media Server 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: Plex Media Server security status · Plex Media Server end-of-life · actively-exploited CVEs. Always verify against Plex's advisories — see our disclaimer.