CVE-2015-4599

CVE-2015-4599 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 SoapFault::__toString method in ext/soap/soap.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 obtain sensitive information, cause a denial of service (application crash), or possibly execute arbitrary code via an unexpected data type, related to a "type confusion" issue.

Frequently asked questions

What is CVE-2015-4599?

The SoapFault::__toString method in ext/soap/soap.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 obtain sensitive information, cause a denial of service (application crash), or possibly execute arbitrary code via an unexpected data type, related to a "type confusion" issue.

How severe is CVE-2015-4599?

CVE-2015-4599 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-2015-4599 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-2015-4599?

CVE-2015-4599 primarily affects Redhat Enterprise Linux Desktop. In total, 39 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-4599?

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-2015-4599 published?

CVE-2015-4599 was published on 2016-05-16 and last updated on 2026-06-17.

References

• http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=51856a76f87ecb24fe1385342be43610fb6c86e4
• http://php.net/ChangeLog-5.php
• http://rhn.redhat.com/errata/RHSA-2015-1135.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/75251
• http://www.securitytracker.com/id/1032709
• https://bugs.php.net/bug.php?id=69152

Affected products (39)

• 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:*:*:*:*:*:*:*

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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)