The grapheme_stripos function in ext/intl/grapheme/grapheme_string.c in PHP before 5.5.35, 5.6.x before 5.6.21, and 7.x before 7.0.6 allows remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via a negative offset.
Published 2016-05-22 01:59:25
Updated 2018-10-30 16:27:32
View at NVD,   CVE.org
Vulnerability category: Denial of service

Threat overview for CVE-2016-4540

Top countries where our scanners detected CVE-2016-4540
Top open port discovered on systems with this issue 80
IPs affected by CVE-2016-4540 322,858
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2016-4540!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2016-4540

3.24%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 90 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2016-4540

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.5
HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P
10.0
6.4
NIST
9.8
CRITICAL CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
NIST

References for CVE-2016-4540

Products affected by CVE-2016-4540

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