Arista EOS 4.29.x · Version Status
Arista EOS 4.29.x End of Life Date
Arista EOS 4.29.x end-of-life date, support status, and CVE risk. Data reconciled from official vendor documentation and endoflife.date at every build; the source of each date is on the product page.
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Arista EOS 4.29.x is past end of life. This version no longer receives security patches. 344 days past EOL — migrate to a supported version immediately.
EOL Date
Oct 31, 2025
344 days past EOL
Latest Release
—
Standard release
Release Date
Oct 31, 2022
Arista EOS 4.29.x series
Lifecycle detail
Arista EOS 4.29 was released on October 31, 2022 and support ended on October 31, 2025 — a supported lifespan of 3 years, in line with the 3 years median for Arista EOS releases. It has been without security patches for 11 months. 1 newer Arista EOS release has shipped since.
Attack Surface
10/30 Medium tier
CISA KEV Exposure
20/20 Named in CISA KEV
Extended Support
0/10 Available
EOL Risk Score™ — proprietary methodology by endoflife.ai. Factors: EOL recency, attack surface breadth, CISA KEV catalog presence, extended support availability. Updated at every build.
Methodology → ·
View score card →
Extended Support
Extended Arista EOS 4.29.x support is available
Commercial vendors offer security patches beyond EOL. Compare your options.
Compare Options →
| Version | Latest | EOL Date | Status |
|---|
| 4.26.x |
— |
Apr 15, 2024 |
EOL |
| 4.27.x |
— |
Sep 27, 2024 |
EOL |
| 4.28.x |
— |
Apr 18, 2025 |
EOL |
| → 4.29.x |
— |
Oct 31, 2025 |
EOL |
| 4.30.x |
— |
Apr 14, 2026 |
EOL |
| 4.31.x |
— |
Oct 13, 2026 |
Warning |
| 4.32.x |
— |
Apr 9, 2027 |
Active |
| 4.33.x |
— |
Oct 10, 2027 |
Active |
What does Arista EOS 4.29.x end of life mean?
When Arista EOS 4.29.x reaches end of life, the maintainers stop issuing security patches for this version. CVEs discovered after the EOL date are publicly disclosed on the National Vulnerability Database with no patch available. Exploit code frequently appears on GitHub within days of disclosure.
The CVE blind spot: A CVE-based scan does not show the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Some scanners flag unsupported versions of common products, but coverage varies, and none of them give you the date in advance. Running Arista EOS 4.29.x past its EOL date creates a growing attack surface that a clean scan result does not rule out.
Migrate to Arista EOS 4.36.x or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Arista EOS 4.29.x reach end of life?
Arista EOS 4.29.x reached end of life on October 31, 2025. This version is no longer receiving security patches.
Is Arista EOS 4.29.x still supported?
No. Arista EOS 4.29.x reached end of life on October 31, 2025 and is no longer receiving security patches.
What should I upgrade to from Arista EOS 4.29.x?
The recommended upgrade from Arista EOS 4.29.x is
Arista EOS 4.36.x — the latest actively supported version. Check the
Arista EOS full timeline for all supported versions.
What are the security risks of running Arista EOS 4.29.x past EOL?
When Arista EOS 4.29.x reaches end of life, the maintainers stop issuing security patches. Any CVEs disclosed after the EOL date accumulate with no vendor fix. A CVE-based scan does not show this — it is the CVE blind spot; some scanners flag unsupported versions of common products, but coverage varies and none give the date in advance. Organizations running EOL Arista EOS should migrate immediately or implement compensating controls.