CVE-2021-3737
A remote, anonymous attacker can exploit multiple vulnerabilities in Python to conduct a denial of service attack and disclose information.
CSIRTS triage
- What
- Multiple vulnerabilities can be exploited by a remote anonymous attacker to conduct denial of service attacks and disclose information.
- Who is affected
- All deployments using affected versions of Python are at risk.
- Urgency
- Remediation is medium urgency as the vulnerabilities are not currently exploited but could lead to denial of service or information disclosure.
- Action
- Update Python to the latest version to mitigate these vulnerabilities.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2021-3737
Get an email if CVE-2021-3737 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Elevated exploitation risk11.6% 30-day exploitation probability — well above the norm. Schedule remediation this cycle. Riskier than 96% of all EPSS-scored CVEs.
Advisory coverage (1)
- medium[UPDATE] [medium] Python: Multiple vulnerabilitiescert-bund · 2026-07-07
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2021-3737)