Fedora vulnerabilities: known CVEs & security history
Fedora Project · OS / Linux · 44 tracked CVEs · 1 actively exploited · updated August 2026 · what is a CVE? →
This is the full list of known vulnerabilities (CVEs) across all Fedora release lines — 44 in total, with 1 actively exploited in the wild. A CVE here doesn't mean your version is affected — check Fedora's current status and the safe version to run.
Known Fedora CVEs
Actively-exploited and most-severe first. Open any CVE for full details.
| CVE | Severity | CVSS | EPSS | Year |
|---|---|---|---|---|
| CVE-2021-40438⚡ exploited | critical | 9 | 100% | 2021 |
| CVE-2023-46850 | critical | 9.8 | 2% | 2023 |
| CVE-2022-37434 | critical | 9.8 | 16% | 2022 |
| CVE-2022-23304 | critical | 9.8 | 2% | 2022 |
| CVE-2022-23303 | critical | 9.8 | 3% | 2022 |
| CVE-2021-33643 | critical | 9.1 | 1% | 2022 |
| CVE-2023-6879 | critical | 9 | 1% | 2023 |
| CVE-2026-35093 | high | 8.8 | 0% | 2026 |
| CVE-2024-21626 | high | 8.6 | 18% | 2024 |
| CVE-2023-5367 | high | 7.8 | 1% | 2023 |
| CVE-2023-4750 | high | 7.8 | 1% | 2023 |
| CVE-2023-4733 | high | 7.8 | 1% | 2023 |
| CVE-2022-1055 | high | 7.8 | 1% | 2022 |
| CVE-2021-35267 | high | 7.8 | 1% | 2021 |
| CVE-2021-35266 | high | 7.8 | 1% | 2021 |
| CVE-2021-33287 | high | 7.8 | 0% | 2021 |
| CVE-2021-35269 | high | 7.8 | 0% | 2021 |
| CVE-2021-35268 | high | 7.8 | 0% | 2021 |
| CVE-2021-33289 | high | 7.8 | 1% | 2021 |
| CVE-2021-23134 | high | 7.8 | 0% | 2021 |
| CVE-2022-27406 | high | 7.5 | 3% | 2022 |
| CVE-2022-27405 | high | 7.5 | 3% | 2022 |
| CVE-2018-25032 | high | 7.5 | 52% | 2022 |
| CVE-2023-40548 | high | 7.4 | 0% | 2024 |
| CVE-2021-20322 | high | 7.4 | 7% | 2022 |
| CVE-2026-54230 | high | 7 | 0% | 2026 |
| CVE-2021-41617 | high | 7 | 2% | 2021 |
| CVE-2021-23133 | medium | 6.7 | 0% | 2021 |
| CVE-2023-4806 | medium | 5.9 | 1% | 2023 |
| CVE-2026-54231 | medium | 5.5 | 0% | 2026 |
| CVE-2024-27012 | medium | 5.5 | 0% | 2024 |
| CVE-2024-0443 | medium | 5.5 | 0% | 2024 |
| CVE-2023-3576 | medium | 5.5 | 0% | 2023 |
| CVE-2023-38559 | medium | 5.5 | 0% | 2023 |
| CVE-2023-2609 | medium | 5.5 | 0% | 2023 |
| CVE-2024-22049 | medium | 5.3 | 1% | 2024 |
| CVE-2023-5380 | medium | 4.7 | 1% | 2023 |
| CVE-2023-48232 | low | 3.9 | 1% | 2023 |
| CVE-2023-48231 | low | 3.9 | 1% | 2023 |
| CVE-2023-48237 | low | 2.8 | 1% | 2023 |
| CVE-2023-48236 | low | 2.8 | 1% | 2023 |
| CVE-2023-48235 | low | 2.8 | 1% | 2023 |
| CVE-2023-48234 | low | 2.8 | 1% | 2023 |
| CVE-2023-48233 | low | 2.8 | 1% | 2023 |
Is my Fedora 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 Fedora version → · Monitor Fedora for new CVEs →
Fedora vulnerabilities — frequently asked
How many known vulnerabilities does Fedora have?
IsItPatched tracks 44 CVEs for Fedora, 1 of which is actively exploited (CISA KEV). 7 are critical-severity and 20 high-severity. These span every release line — what matters is whether the version you run is affected.
Does Fedora have any actively-exploited vulnerabilities?
Yes — 1 Fedora CVE is in CISA's Known Exploited Vulnerabilities catalog, meaning it is confirmed exploited in the wild (1 linked to ransomware). Patch it as a priority.
What is the most severe Fedora vulnerability?
Among tracked issues, CVE-2021-40438 (CRITICAL, CVSS 9), which is actively exploited, ranks highest — a Server-side request forgery (SSRF) weakness.
Is Fedora safe to use?
It depends on the version. The latest supported Fedora release (44) 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: Fedora security status · Fedora end-of-life · actively-exploited CVEs. Always verify against Fedora Project's advisories — see our disclaimer.