{"cve":"CVE-2010-3493","nvd":{"published":"2010-10-19T20:00:04.283","modified":"2026-06-16T23:22:52.803","status":"Modified","description":"Multiple race conditions in smtpd.py in the smtpd module in Python 2.6, 2.7, 3.1, and 3.2 alpha allow remote attackers to cause a denial of service (daemon outage) by establishing and then immediately closing a TCP connection, leading to the accept function having an unexpected return value of None, an unexpected value of None for the address, or an ECONNABORTED, EAGAIN, or EWOULDBLOCK error, or the getpeername function having an ENOTCONN error, a related issue to CVE-2010-3492.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-362"],"references":["http://bugs.python.org/issue6706","http://bugs.python.org/issue9129","http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html","http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html","http://secunia.com/advisories/43068"],"products":["python:python"],"source":"nvd","synced_at":"2026-10-19T19:57:56.749847046+00:00"},"epss":{"cve":"CVE-2010-3493","score":0.02798,"percentile":0.86453,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}