Cisco ASA 9.23 · Version Status
Cisco ASA 9.23 End of Life Date
Cisco ASA 9.23 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.
✓
Cisco ASA 9.23 is actively supported. EOL date: September 29, 2027.
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EOL Date
Sep 29, 2027
356 days remaining
Latest Release
9.23
Standard release
Release Date
Mar 5, 2025
Cisco ASA 9.23 series
Extended Support
Sep 30, 2028
Extended support
Lifecycle detail
Cisco ASA 9.23 was released on March 5, 2025 and support is scheduled to end on September 29, 2027 — a planned supported lifespan of 2 years and 7 months, shorter than the 3 years and 6 months median for Cisco ASA releases.
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 →
| Version | Latest | EOL Date | Status |
|---|
| 9.16 |
9.16 |
Nov 18, 2026 |
Warning |
| 9.17 |
9.17 |
Dec 21, 2024 |
EOL |
| 9.18 |
9.18 |
Nov 18, 2026 |
Warning |
| 9.19 |
9.19 |
May 18, 2026 |
EOL |
| 9.20 |
9.20 |
EOL |
Active |
| 9.22 |
9.22 |
EOL |
Active |
| → 9.23 |
9.23 |
Sep 29, 2027 |
Active |
| 9.24 |
9.24 |
EOL |
Active |
What does Cisco ASA 9.23 end of life mean?
When Cisco ASA 9.23 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 Cisco ASA 9.23 past its EOL date creates a growing attack surface that a clean scan result does not rule out.
Migrate to Cisco ASA 9.24 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Cisco ASA 9.23 reach end of life?
Cisco ASA 9.23 reached end of life on September 29, 2027. That is 356 days remaining.
Is Cisco ASA 9.23 still supported?
Yes, Cisco ASA 9.23 is currently supported. The EOL date is September 29, 2027.
What should I upgrade to from Cisco ASA 9.23?
The recommended upgrade from Cisco ASA 9.23 is
Cisco ASA 9.24 — the latest actively supported version. Check the
Cisco ASA full timeline for all supported versions.
What are the security risks of running Cisco ASA 9.23 past EOL?
When Cisco ASA 9.23 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 Cisco ASA should migrate immediately or implement compensating controls.