VULNERABILITY INTELLIGENCE
CVE-2015-8838
CVSS score5.9 MEDIUM
EPSS probability1.73%
CISA KEVNot currently listed
Published2016-05-16
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Description
ext/mysqlnd/mysqlnd.c in PHP before 5.4.43, 5.5.x before 5.5.27, and 5.6.x before 5.6.11 uses a client SSL option to mean that SSL is optional, which allows man-in-the-middle attackers to spoof servers via a cleartext-downgrade attack, a related issue to CVE-2015-3152.
Weakness classification
- CWE-284: Improper Access Control