All vulnerabilitiesServers and applications
CVE-2016-4541 The grapheme_strpos 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.
Severity Critical 9.8
Published 22 May 2016
Last changed 17 Jun 2026
Added to UpHeron 14 Oct 2026
Sources NVD Affected software Software Affected versions PHPServers and applications · cpe:a:php:php Version 7.0.5 Version 7.0.4 Version 7.0.3 Version 7.0.2 All 28 release lines Every version up to 5.5.34 Version 5.6.0 Version 5.6.1 Version 5.6.2 Version 5.6.3 Version 5.6.4 Version 5.6.5 Version 5.6.6 Version 5.6.7 Version 5.6.8 Version 5.6.9 Version 5.6.10 Version 5.6.11 Version 5.6.12 Version 5.6.13 Version 5.6.14 Version 5.6.15 Version 5.6.16 Version 5.6.17 Version 5.6.18 Version 5.6.19 Version 5.6.20 Version 7.0.0 Version 7.0.1 Version 7.0.2 Version 7.0.3 Version 7.0.4 Version 7.0.5
References NVD https://nvd.nist.gov/vuln/detail/CVE-2016-4541 CVE.org https://www.cve.org/CVERecord?id=CVE-2016-4541