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CVE-2016-1904

19
FAUCET Score

CVE-2016-1904 describes multiple integer overflows in PHP 7.x before version 7.0.2, specifically within the php_escape_shell_cmd and php_escape_shell_arg functions. This vulnerability allows remote attackers to trigger a heap-based buffer overflow by providing a long string, potentially leading to a denial of service or other unspecified impacts. Rated 7.3 HIGH, it has a low attack complexity and does not require user interaction or privileges, with potential impacts on confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
7.0.0CPE matchmatch criteria
cpe:2.3:a:php:php:7.0.0:*:*:*:*:*:*:*
7.0.1CPE matchmatch criteria
cpe:2.3:a:php:php:7.0.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.3HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
3.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.73%
Probability of exploitation in next 30 days
EPSS Percentile
84.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0273 is in the 73rd percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2016-1904Moderate

php: heap buffer overflow in escapeshell functions

Jan 14, 2016

References

bugs.php.net / bug.php
Exploit
github.com / php/php-src/commit/2871c70efaaaa0f102557a17c727fd4d5204dd4b
openwall.com / lists/oss-security/2016/01/14/8
php.net / ChangeLog-7.php
Vendor Advisory
securitytracker.com / id/1034608