Java Runtime Environment (JRE) vulnerabilities: known CVEs & security history
Oracle · Actively exploited · 29 tracked CVEs · 4 actively exploited · updated September 2026 · what is a CVE? →
This is the full list of known vulnerabilities (CVEs) across all Java Runtime Environment (JRE) release lines — 29 in total, with 4 actively exploited in the wild. A CVE here doesn't mean your version is affected — check Java Runtime Environment (JRE)'s current status and the safe version to run.
Known Java Runtime Environment (JRE) CVEs
Actively-exploited and most-severe first. Open any CVE for full details.
| CVE | Severity | CVSS | EPSS | Year |
|---|---|---|---|---|
| CVE-2012-4681⚡ exploited | critical | 9.8 | 99% | 2012 |
| CVE-2012-1723⚡ exploited | critical | 9.8 | 94% | 2012 |
| CVE-2012-0507⚡ exploited | critical | 9.8 | 98% | 2012 |
| CVE-2013-0431⚡ exploited | medium | 5.3 | 90% | 2013 |
| CVE-2016-9841 | critical | 9.8 | 8% | 2017 |
| CVE-2016-9842 | high | 8.8 | 5% | 2017 |
| CVE-2016-9840 | high | 8.8 | 5% | 2017 |
| CVE-2026-62574 | high | 7.8 | 0% | 2026 |
| CVE-2026-47063 | high | 7.5 | 0% | 2026 |
| CVE-2026-47057 | high | 7.5 | 0% | 2026 |
| CVE-2026-34282 | high | 7.5 | 1% | 2026 |
| CVE-2026-22016 | high | 7.5 | 1% | 2026 |
| CVE-2026-21945 | high | 7.5 | 1% | 2026 |
| CVE-2026-47058 | high | 7.4 | 0% | 2026 |
| CVE-2026-21932 | high | 7.4 | 0% | 2026 |
| CVE-2026-60526 | medium | 6.7 | 0% | 2026 |
| CVE-2026-60147 | medium | 6.5 | 0% | 2026 |
| CVE-2026-46968 | medium | 5.9 | 0% | 2026 |
| CVE-2026-47027 | medium | 5.3 | 0% | 2026 |
| CVE-2026-47021 | medium | 5.3 | 0% | 2026 |
| CVE-2026-47013 | medium | 5.3 | 0% | 2026 |
| CVE-2026-46917 | medium | 5.3 | 0% | 2026 |
| CVE-2026-47059 | low | 3.7 | 0% | 2026 |
| CVE-2026-47010 | low | 3.7 | 0% | 2026 |
| CVE-2026-60166 | low | 3.1 | 0% | 2026 |
| CVE-2026-60164 | low | 3.1 | 0% | 2026 |
| CVE-2026-47035 | low | 3.1 | 0% | 2026 |
| CVE-2026-47034 | low | 3.1 | 0% | 2026 |
| CVE-2026-47030 | low | 3.1 | 0% | 2026 |
Is my Java Runtime Environment (JRE) 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 Java Runtime Environment (JRE) version → · Monitor Java Runtime Environment (JRE) for new CVEs →
Java Runtime Environment (JRE) vulnerabilities — frequently asked
How many known vulnerabilities does Java Runtime Environment (JRE) have?
IsItPatched tracks 29 CVEs for Java Runtime Environment (JRE), 4 of which are actively exploited (CISA KEV). 4 are critical-severity and 10 high-severity. These span every release line — what matters is whether the version you run is affected.
Does Java Runtime Environment (JRE) have any actively-exploited vulnerabilities?
Yes — 4 Java Runtime Environment (JRE) CVEs are in CISA's Known Exploited Vulnerabilities catalog, meaning they are confirmed exploited in the wild (4 linked to ransomware). Patch these as a priority.
What is the most severe Java Runtime Environment (JRE) vulnerability?
Among tracked issues, CVE-2012-4681 (CRITICAL, CVSS 9.8), which is actively exploited, ranks highest — a Improper access control weakness.
Is Java Runtime Environment (JRE) safe to use?
It depends on the version. The latest supported Java Runtime Environment (JRE) 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: Java Runtime Environment (JRE) security status · Java Runtime Environment (JRE) end-of-life · actively-exploited CVEs. Always verify against Oracle's advisories — see our disclaimer.