EOS vulnerabilities: known CVEs & security history
Arista · Network OS · 46 tracked CVEs · 3 actively exploited · updated June 2026 · what is a CVE? →
This is the full list of known vulnerabilities (CVEs) across all EOS release lines — 46 in total, with 3 actively exploited in the wild. A CVE here doesn't mean your version is affected — check EOS's current status and the safe version to run.
Known EOS CVEs
Actively-exploited and most-severe first. Open any CVE for full details.
| CVE | Severity | CVSS | EPSS | Year |
|---|---|---|---|---|
| CVE-2014-7169⚡ exploited | critical | 9.8 | 100% | 2014 |
| CVE-2014-6271⚡ exploited | critical | 9.8 | 100% | 2014 |
| CVE-2026-7473⚡ exploited | medium | 5.8 | 0% | 2026 |
| CVE-2020-10188 | critical | 9.8 | 75% | 2020 |
| CVE-2017-18017 | critical | 9.8 | 52% | 2018 |
| CVE-2017-14491 | critical | 9.8 | 85% | 2017 |
| CVE-2023-24509 | critical | 9.3 | 0% | 2023 |
| CVE-2021-28506 | critical | 9.1 | 1% | 2022 |
| CVE-2021-28500 | critical | 9.1 | 1% | 2022 |
| CVE-2015-8236 | high | 10 | 4% | 2015 |
| CVE-2015-5165 | high | 9.3 | 13% | 2015 |
| CVE-2023-24512 | high | 8.8 | 1% | 2023 |
| CVE-2024-6387 | high | 8.1 | 100% | 2024 |
| CVE-2023-24510 | high | 7.5 | 1% | 2023 |
| CVE-2021-28505 | high | 7.5 | 1% | 2022 |
| CVE-2021-28504 | high | 7.5 | 1% | 2022 |
| CVE-2020-15897 | high | 7.5 | 1% | 2020 |
| CVE-2020-17355 | high | 7.5 | 1% | 2020 |
| CVE-2019-18948 | high | 7.5 | 1% | 2020 |
| CVE-2019-17596 | high | 7.5 | 5% | 2019 |
| CVE-2018-5254 | high | 7.5 | 1% | 2018 |
| CVE-2015-6855 | high | 7.5 | 4% | 2015 |
| CVE-2015-3209 | high | 7.5 | 10% | 2015 |
| CVE-2021-28503 | high | 7.4 | 1% | 2022 |
| CVE-2020-24360 | high | 7.4 | 1% | 2020 |
| CVE-2015-3214 | medium | 6.9 | 2% | 2015 |
| CVE-2021-28508 | medium | 6.8 | 0% | 2022 |
| CVE-2015-5745 | medium | 6.5 | 3% | 2020 |
| CVE-2015-5278 | medium | 6.5 | 2% | 2020 |
| CVE-2015-5239 | medium | 6.5 | 4% | 2020 |
| CVE-2018-14008 | medium | 6.5 | 1% | 2019 |
| CVE-2018-5255 | medium | 6.5 | 1% | 2018 |
| CVE-2021-28509 | medium | 6.1 | 0% | 2022 |
| CVE-2023-3646 | medium | 5.9 | 1% | 2023 |
| CVE-2020-26569 | medium | 5.9 | 1% | 2020 |
| CVE-2021-28511 | medium | 5.8 | 0% | 2022 |
| CVE-2021-28496 | medium | 5.7 | 0% | 2021 |
| CVE-2021-28507 | medium | 5.5 | 1% | 2022 |
| CVE-2023-24548 | medium | 5.3 | 0% | 2023 |
| CVE-2023-24511 | medium | 5.3 | 1% | 2023 |
| CVE-2021-28510 | medium | 5.3 | 1% | 2023 |
| CVE-2020-15898 | medium | 5.3 | 1% | 2020 |
| CVE-2020-25686 | low | 3.7 | 5% | 2021 |
| CVE-2020-25685 | low | 3.7 | 2% | 2021 |
| CVE-2020-25684 | low | 3.7 | 4% | 2021 |
| CVE-2015-6815 | low | 3.5 | 1% | 2020 |
Is my EOS 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 EOS version → · Monitor EOS for new CVEs →
EOS vulnerabilities — frequently asked
How many known vulnerabilities does EOS have?
IsItPatched tracks 46 CVEs for EOS, 3 of which are actively exploited (CISA KEV). 8 are critical-severity and 16 high-severity. These span every release line — what matters is whether the version you run is affected.
Does EOS have any actively-exploited vulnerabilities?
Yes — 3 EOS CVEs are in CISA's Known Exploited Vulnerabilities catalog, meaning they are confirmed exploited in the wild. Patch these as a priority.
What is the most severe EOS vulnerability?
Among tracked issues, CVE-2014-7169 (CRITICAL, CVSS 9.8), which is actively exploited, ranks highest — a OS command injection weakness.
Is EOS safe to use?
It depends on the version. The latest supported EOS 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: EOS security status · EOS end-of-life · actively-exploited CVEs. Always verify against Arista's advisories — see our disclaimer.