Is CVE-2010-1378 being actively exploited?

CVE-2010-1378 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2010-1378?

CVE-2010-1378 has a CVSS 3.1 base score of 9.8 (CRITICAL).

CVE-2010-1378

CRITICAL · CVSS 9.8EPSS 1.3%EU EUVD

OpenSSL in Apple Mac OS X 10.6.x before 10.6.5 does not properly perform arithmetic, which allows remote attackers to bypass X.509 certificate authentication via an arbitrary certificate issued by a legitimate Certification Authority.

Key facts

CVSS score: 9.8 (v3.1)
Severity: CRITICAL
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-295
EPSS score: 1.3% (70th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2010-1406)
Published: November 15, 2010
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2010-1406 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.

View on the EU Vulnerability Database

Affected products

apple / mac os x
apple / mac os x server

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Apple Mac OS X 10.6 - Apple Inc. - Common Criteria BSI-DSZ-CC-0536-2010 - archived

References

http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html(Mailing List)
http://support.apple.com/kb/HT4435(Broken Link, Patch, Vendor Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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