Python 3.9.21
pythonevery versioncounted 2026-10-08 03:20 UTC
As of 2026-10-08, 90 hosts ran Python 3.9.21 with at least one known CVE on a service open at their latest check; 13 distinct CVEs match this version.
Known CVEs on hosts running it
90hosts with known CVEs
13distinct CVEs
A match is an indication, not proof: it is based on the software version a service reported, and fixes are often backported without changing the version.
Not counted: 5 hosts with CVEs of it only from an older observation (software reported earlier, no service of that kind open now).
Most common CVEs
| CVE | Hosts |
|---|---|
| CVE-2023-36632 HIGH 7.5 | 90 |
| CVE-2025-13836 HIGH 7.5 | 90 |
| CVE-2026-3644 HIGH 7.5 | 90 |
| CVE-2026-4224 HIGH 7.5 | 90 |
| CVE-2026-4519 HIGH 7.0 | 90 |
| CVE-2025-12084 MEDIUM 6.3 | 90 |
| CVE-2025-12781 MEDIUM 6.3 | 90 |
| CVE-2025-13837 MEDIUM 5.5 | 90 |
| CVE-2026-15308 HIGH 7.5 | 84 |
| CVE-2026-7210 HIGH 7.5 | 84 |
| CVE-2026-0864 MEDIUM 5.5 | 84 |
| CVE-2025-13462 LOW 3.3 | 84 |
| CVE-2026-6019 LOW 2.1 | 84 |
Hosts: matches on services open at each host's latest check.