PHP up to 7.0.0 Zend/zend_execute_API.c zend_throw_or_error format string

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability, which was classified as very critical, has been found in PHP up to 7.0.0 (Programming Language Software). This issue affects the function zend_throw_or_error of the file Zend/zend_execute_API.c. The manipulation with an unknown input leads to a format string vulnerability. Using CWE to declare the problem leads to CWE-134. The software uses a function that accepts a format string as an argument, but the format string originates from an external source. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 01/19/2016 (Website). It is possible to read the advisory at The identification of this vulnerability is CVE-2015-8617 since 12/22/2015. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/03/2022).

We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 87599 (PHP 7.0.x < 7.0.1 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context r.

Upgrading to version 7.0.1 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (87599). The entries 80326, 83183, 83184 and 83185 are pretty similar.





  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Format string
CWE: CWE-134 / CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 87599
Nessus Name: PHP 7.0.x < 7.0.1 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 103043
OpenVAS Name: PHP Multiple Vulnerabilities - 02 - Mar16 (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: PHP 7.0.1


12/17/2015 🔍
12/22/2015 +5 days 🔍
12/22/2015 +0 days 🔍
01/19/2016 +28 days 🔍
01/19/2016 +0 days 🔍
01/20/2016 +1 days 🔍
07/03/2022 +2356 days 🔍



Advisory: 71105
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-8617 (🔍)
SecurityTracker: 1034543
SecurityFocus: 79655

See also: 🔍


Created: 01/20/2016 10:07 AM
Updated: 07/03/2022 04:24 PM
Changes: 01/20/2016 10:07 AM (60), 06/25/2018 09:15 AM (14), 07/03/2022 04:17 PM (5), 07/03/2022 04:24 PM (1)
Complete: 🔍


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