Erlang/OTP vulnerabilities: known CVEs & security history
Erlang · Actively exploited · 29 tracked CVEs · 1 actively exploited · updated June 2026 · what is a CVE? →
This is the full list of known vulnerabilities (CVEs) across all Erlang/OTP release lines — 29 in total, with 1 actively exploited in the wild. A CVE here doesn't mean your version is affected — check Erlang/OTP's current status and the safe version to run.
Known Erlang/OTP CVEs
Actively-exploited and most-severe first. Open any CVE for full details.
| CVE | Severity | CVSS | EPSS | Year |
|---|---|---|---|---|
| CVE-2025-32433⚡ exploited | critical | 10 | 98% | 2025 |
| CVE-2026-28808 | critical | 9.8 | 0% | 2026 |
| CVE-2022-37026 | critical | 9.8 | 1% | 2022 |
| CVE-2016-10253 | critical | 9.8 | 1% | 2017 |
| CVE-2026-23941 | critical | 9.4 | 1% | 2026 |
| CVE-2026-49759 | high | 8.2 | 0% | 2026 |
| CVE-2026-42790 | high | 8.1 | 0% | 2026 |
| CVE-2011-0766 | high | 7.8 | 3% | 2011 |
| CVE-2020-35733 | high | 7.5 | 1% | 2021 |
| CVE-2020-25623 | high | 7.5 | 3% | 2020 |
| CVE-2014-1693 | high | 7.5 | 2% | 2014 |
| CVE-2026-32144 | high | 7.4 | 0% | 2026 |
| CVE-2021-29221 | high | 7 | 1% | 2021 |
| CVE-2026-48860 | medium | 6.5 | 0% | 2026 |
| CVE-2026-48858 | medium | 6.5 | 0% | 2026 |
| CVE-2026-48856 | medium | 6.5 | 0% | 2026 |
| CVE-2026-48855 | medium | 6.5 | 0% | 2026 |
| CVE-2016-1000107 | medium | 6.1 | 1% | 2019 |
| CVE-2023-48795 | medium | 5.9 | 93% | 2023 |
| CVE-2017-1000385 | medium | 5.9 | 22% | 2017 |
| CVE-2015-2774 | medium | 5.9 | 2% | 2016 |
| CVE-2026-49760 | medium | 5.5 | 0% | 2026 |
| CVE-2026-23942 | medium | 5.4 | 0% | 2026 |
| CVE-2026-48859 | medium | 5.3 | 0% | 2026 |
| CVE-2026-23943 | medium | 5.3 | 1% | 2026 |
| CVE-2026-42789 | medium | 4.8 | 0% | 2026 |
| CVE-2026-32147 | medium | 4.3 | 0% | 2026 |
| CVE-2026-42791 | low | 3.7 | 0% | 2026 |
| CVE-2026-28810 | low | 3.7 | 0% | 2026 |
Is my Erlang/OTP 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 Erlang/OTP version → · Monitor Erlang/OTP for new CVEs →
Erlang/OTP vulnerabilities — frequently asked
How many known vulnerabilities does Erlang/OTP have?
IsItPatched tracks 29 CVEs for Erlang/OTP, 1 of which is actively exploited (CISA KEV). 5 are critical-severity and 8 high-severity. These span every release line — what matters is whether the version you run is affected.
Does Erlang/OTP have any actively-exploited vulnerabilities?
Yes — 1 Erlang/OTP CVE is in CISA's Known Exploited Vulnerabilities catalog, meaning it is confirmed exploited in the wild. Patch it as a priority.
What is the most severe Erlang/OTP vulnerability?
Among tracked issues, CVE-2025-32433 (CRITICAL, CVSS 10), which is actively exploited, ranks highest — a Missing authentication weakness.
Is Erlang/OTP safe to use?
It depends on the version. The latest supported Erlang/OTP 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: Erlang/OTP security status · Erlang/OTP end-of-life · actively-exploited CVEs. Always verify against Erlang's advisories — see our disclaimer.