CVE-2021-32066

HIGH
7.4
CVSS Score
Published: August 1, 2021 at 12:00 AM UTC
Updated: June 17, 2026 at 03:52 AM UTC
2 products affected across 2 vendorsJD Edwards EnterpriseOne ToolsRuby

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Severity
HIGH7.4
Exploit prediction
EPSS 3%

Description

An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a "StartTLS stripping attack."

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 9.2.6.1
Affected range stops below 9.2.6.1, so it looks safe — our inference, not a vendor statement
95%
2.6.0 ≤ v ≤ 2.6.72.7.0 ≤ v ≤ 2.7.33.0.0 ≤ v ≤ 3.0.1

CVSS

Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-755

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