QID 375559

QID 375559: Python Open Secure Sockets Layer (OpenSSL) Library Vulnerability

Python is an interpreted, high-level and general-purpose programming language.

CVE-2021-3449 : An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client.
CVE-2021-2450 : OpenSSL security check bypass.
Affected Versions of Python:
Python Versions 0.x up to 3.8.8
Python Versions 3.9.x up to 3.9.2

QID Detection Logic(Authenticated):
Detects the installed python version either from py.exe or patchlevel.h file.

Successful exploitation of these vulnerabilities may allow an attacker to crash the OpenSSL or enables untrusted users to modify OpenSSL's default configuration, insert CA certificates, modify (or even replace) existing engine modules, etc.

  • CVSS V3 rated as High - 7.4 severity.
  • CVSS V2 rated as Medium - 5.8 severity.
  • Solution
    Vendor has release fix to this issue.
    Refer to issue trackerBug 43631 to address this vulnerability and obtain further details.
    Vendor References

    CVEs related to QID 375559

    Software Advisories
    Advisory ID Software Component Link
    Bug 43631 URL Logo bugs.python.org/issue43631
    © CVE.report 2026 |

    Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

    CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

    Free CVE JSON API cve.report/api

    CVE.report and Source URL Uptime Status status.cve.report