Firefox 115 · Version Status
Firefox 115 End of Life Date
Firefox 115 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
⚡
Firefox 115 reaches end of life on August 28, 2026. Plan your migration now — 66 days remaining.
📅 Get reminded before Firefox 115 reaches EOL on August 28, 2026 — alerts 90, 30 & 7 days out.
EOL Date
Aug 28, 2026
66 days remaining
Latest Release
115.37.0
LTS release
Release Date
Jul 4, 2023
Firefox 115 series
Attack Surface
10/30 Medium tier
CISA KEV Exposure
0/20 Not in KEV
Extended Support
10/10 None 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 |
|---|
| 78 LTS |
78.15.0 |
Nov 2, 2021 |
EOL |
| 91 LTS |
91.13.0 |
Sep 20, 2022 |
EOL |
| 102 LTS |
102.15.1 |
Sep 26, 2023 |
EOL |
| 103 |
103.0.2 |
Aug 23, 2022 |
EOL |
| 104 |
104.0.2 |
Sep 20, 2022 |
EOL |
| 105 |
105.0.3 |
Oct 18, 2022 |
EOL |
| 106 |
106.0.5 |
Nov 15, 2022 |
EOL |
| 107 |
107.0.1 |
Dec 13, 2022 |
EOL |
What does Firefox 115 end of life mean?
When Firefox 115 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: Most vulnerability scanners check for known CVEs but do not flag the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Running Firefox 115 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Firefox 152 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Firefox 115 reach end of life?
Firefox 115 reached end of life on August 28, 2026. That is 66 days remaining.
Is Firefox 115 still supported?
Firefox 115 is still supported but approaching end of life on August 28, 2026. Begin planning your migration now.
What should I upgrade to from Firefox 115?
The recommended upgrade from Firefox 115 is
Firefox 152 — the latest actively supported version. Check the
Firefox full timeline for all supported versions.
What are the security risks of running Firefox 115 past EOL?
When Firefox 115 reaches end of life, the maintainers stop issuing security patches. Any CVEs disclosed after the EOL date accumulate with no remediation path. Most vulnerability scanners do not flag this — it is the CVE blind spot. Organizations running EOL Firefox should migrate immediately or implement compensating controls.