What is CVE-2015-7503?

CVE-2015-7503 is a high-severity vulnerability in Zend Framework, classified under CWE-320. CVSS score: 7.5/10. Published 2017-10-10.

How severe is CVE-2015-7503?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Zend Framework

CVE-2015-7503

Zend Framework before 2.4.9, zend-framework/zend-crypt 2.4.x before 2.4.9, and 2.5.x before 2.5.2 allows remote attackers to recover the RSA private key.

Published 2017-10-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.014 (70.5th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 70.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Zend Framework — versions 2.4.0, 2.4.1, 2.4.2

Weakness classification (CWE)

CWE-320

References

framework.zend.com/security/advisory/ZF2015-10 (Vendor Advisory)
bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2015-7503?: CVE-2015-7503 is a high-severity vulnerability in Zend Framework, classified under CWE-320. CVSS score: 7.5/10. Published 2017-10-10.
How severe is CVE-2015-7503?: High severity. CVSS v3 base score is 7.5 out of 10.