CVE-2022-3786

CVE Enrichment

CVSS: 7.5 HIGH
EPSS: 92.49%
EPSS Percentile: 99.83%
CISA KEV: Not listed

Description

A buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification and requires either a CA to have signed a malicious certificate or for an application to continue certificate verification despite failure to construct a path to a trusted issuer. An attacker can craft a malicious email address in a certificate to overflow an arbitrary number of bytes containing the `.' character (decimal 46) on the stack. This buffer overflow could result in a crash (causing a denial of service). In a TLS client, this can be triggered by connecting to a malicious server. In a TLS server, this can be triggered if the server requests client authentication and a malicious client connects.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: openssl-security@openssl.org
Published: 02-Nov-2022 01:15
Last Modified: 17-Jun-2026 12:00
EPSS Date: 2026-10-18
CWE: CWE-120

CVSS Vector


            CVSS:3.1                            AV:N /
                            AC:L /
                            PR:N /
                            UI:N /
                            S:U /
                            C:N /
                            I:N /
                            A:H

Affected Products / Versions

openssl / openssl
Version / affected range: * · from (inclusive) 3.0.0 · before (exclusive) 3.0.7
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
fedoraproject / fedora
Version / affected range: 36
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
fedoraproject / fedora
Version / affected range: 37
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
nodejs / node.js
Version / affected range: * · from (inclusive) 18.0.0 · before (exclusive) 18.11.0
cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*
nodejs / node.js
Version / affected range: 18.12.0
cpe:2.3:a:nodejs:node.js:18.12.0:*:*:*:lts:*:*:*
nodejs / node.js
Version / affected range: 19.0.0
cpe:2.3:a:nodejs:node.js:19.0.0:*:*:*:-:*:*:*

References

Last enrichment sync: 19-Oct-2026 21:10
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

TL;DR: OpenSSL Project released two new vulnerabilities, CVE-2022-3602 and CVE-2022-3786, which are less severe than previously announced. According to Wiz Research, these buffer overflow vulnerabilities are hard to OpenSSL 3 Vulnerabilities Could Enable Remote Code Execution Under Specific Conditions

CVE (1)

People (1)

Vendors (1)

Products (3)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.