CVE-2015-6836

What it is

The SoapClient __call method in ext/soap/soap.c in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13 does not properly manage headers, which allows remote attackers to execute arbitrary code via crafted serialized data that triggers a "type confusion" in the serialize_function_call function.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

10.3% chance of exploitation in the next 30 days (EPSS). Higher than most.

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2016-01-19 05:59 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 00:31 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 10.3% in the next 30 days (EPSS).
• Severity: 7.3 HIGH (CVSS).
• Fix: none linked yet, which raises it.

Details

Published

2016-01-19 05:59 UTC

Last modified

2026-06-17 00:31 UTC

Exploit probability

10.3% · EPSS, next 30 days

Record status

Modified

Affected

• PHP ≤ 5.4.44
• PHP 5.5.0
• PHP 5.5.1
• PHP 5.5.2
• PHP 5.5.3
• PHP 5.5.4
• PHP 5.5.5
• PHP 5.5.6

Attack profile CVSS 3.0 · 7.3

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2015-6836.md and follow it. Check whether this project is affected by CVE-2015-6836. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

Copy as ticket · More options · Status badge