CVE-2015-4603

CVE-2015-4603 is a critical-severity vulnerability in Redhat Enterprise Linux Desktop with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 11% places it in the 95th percentile, indicating an elevated likelihood of exploitation.

Key facts

• Severity: Critical (CVSS 3.x base score 9.8)
• CVSS v2: 10.0
• EPSS exploit prediction: 11% (95th percentile)
• Actively exploited: Not listed in CISA KEV
• Affected product: Redhat Enterprise Linux Desktop
• Published: 2016-05-16
• Last modified: 2026-06-17

Description

The exception::getTraceAsString function in Zend/zend_exceptions.c in PHP before 5.4.40, 5.5.x before 5.5.24, and 5.6.x before 5.6.8 allows remote attackers to execute arbitrary code via an unexpected data type, related to a "type confusion" issue.

Frequently asked questions

What is CVE-2015-4603?

The exception::getTraceAsString function in Zend/zend_exceptions.c in PHP before 5.4.40, 5.5.x before 5.5.24, and 5.6.x before 5.6.8 allows remote attackers to execute arbitrary code via an unexpected data type, related to a "type confusion" issue.

How severe is CVE-2015-4603?

CVE-2015-4603 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2015-4603 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-4603?

CVE-2015-4603 primarily affects Redhat Enterprise Linux Desktop. In total, 41 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-4603?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2015-4603 published?

CVE-2015-4603 was published on 2016-05-16 and last updated on 2026-06-17.

References

• http://php.net/ChangeLog-5.php
• http://rhn.redhat.com/errata/RHSA-2015-1135.html
• http://rhn.redhat.com/errata/RHSA-2015-1186.html
• http://rhn.redhat.com/errata/RHSA-2015-1187.html
• http://rhn.redhat.com/errata/RHSA-2015-1218.html
• http://www.openwall.com/lists/oss-security/2015/06/16/12
• http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
• http://www.securityfocus.com/bid/75252
• http://www.securitytracker.com/id/1032709
• https://bugs.php.net/bug.php?id=69152

Affected products (41)

• cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.0:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.1:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.2:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.3:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.4:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.5:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.6:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.7:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.8:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.9:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.10:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.11:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.12:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.13:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.14:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.15:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.16:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.17:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.18:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.19:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.20:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.21:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.22:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.23:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.6.0:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.6.4:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.6.5:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.6.6:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.6.7:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_hpc_node:7.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_hpc_node_eus:7.1:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_server_eus:7.1:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*

More vulnerabilities in Redhat Enterprise Linux Desktop

• CVE-2018-18505 — Critical (CVSS 10.0): An earlier fix for an Inter-process Communication (IPC) vulnerability, CVE-2011-3079, added authentication to…
• CVE-2014-0247 — Critical (CVSS 10.0): LibreOffice 4.2.4 executes unspecified VBA macros automatically, which has unspecified impact and attack vectors,…
• CVE-2014-1512 — Critical (CVSS 10.0): Use-after-free vulnerability in the TypeObject class in the JavaScript engine in Mozilla Firefox before 28.0, Firefox…
• CVE-2013-5843 — Critical (CVSS 10.0): Unspecified vulnerability in Oracle Java SE 7u40 and earlier, Java SE 6u60 and earlier, Java SE 5.0u51 and earlier,…
• CVE-2013-5842 — Critical (CVSS 10.0): Unspecified vulnerability in Oracle Java SE 7u40 and earlier, Java SE 6u60 and earlier, Java SE 5.0u51 and earlier, and…
• CVE-2013-5830 — Critical (CVSS 10.0): Unspecified vulnerability in Oracle Java SE 7u40 and earlier, Java SE 6u60 and earlier, Java SE 5.0u51 and earlier,…

All CVEs affecting Redhat Enterprise Linux Desktop →

Threat intelligence

Threat-intel indicators referencing this CVE:

• 45.84.120.3 (ipv4-addr)
• 221.161.235.168 (ipv4-addr)
• 200.196.50.91 (ipv4-addr)
• 187.141.71.166 (ipv4-addr)
• 187.110.238.50 (ipv4-addr)
• 113.164.66.10 (ipv4-addr)
• 103.38.219.22 (ipv4-addr)
• 103.20.122.54 (ipv4-addr)