CVE-2021-3737

HIGH
7.5
CVSS Score
Published: March 4, 2022 at 12:00 AM UTC
Updated: October 14, 2026 at 10:17 AM UTC
17 products affected across 6 vendorsFedoraUbuntu LinuxEnterprise Linux

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Severity
HIGH7.5
Exploit prediction
EPSS 13%
SSVC
No known exploit

Description

A flaw was found in python. An improperly handled HTTP response in the HTTP client code of python may allow a remote attacker, who controls the HTTP server, to make the client script enter an infinite loop, consuming CPU time. The highest threat from this vulnerability is to system availability.

Affected

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-835CWE-400

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