SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2015-6836

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…

HIGH 7.3EPSS 10.3%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 10.3%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.

Description

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.

CVSS 3.0
7.3 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
EPSS
10.32% probability · 96th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
php/php
Source
security@opentext.com
EPSS trend
0%10%20%21 September 2026: 15.23%22 September 2026: 9.80%4 November 2026: 10.32%21 September 20264 November 2026

EPSS moved from 15.2% on 21 September 2026 to 10.3% on 4 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.