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    CVE-2016-4540

    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:Apr 20, 2016
    Last Modified:Apr 12, 2025
    EPS:May 22, 2016
    EPSS Score:0.00886
    CVSS Score:9.8

    Affected Products

    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Opensuse
    Product
    Leap
    Vendor
    Php
    Product
    Php
    Vendor
    Redhat
    Product
    Rhel Software Collections

    Exploits

    https://bugs.php.net/bug.php?id=72061https://bugs.php.net/bug.php?id=72061

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    Related CVEs

    CVE-2026-54231 (CVSS 5.5) — A content injection vulnerability was found in the ABRT post-create event handler scripts in libreport. The ev…
    CVE-2026-54230 (CVSS 7) — A symlink following vulnerability was found in the ABRT post-create event handler scripts in libreport. Event …
    CVE-2026-35094 (CVSS 3.3) — A flaw was found in libinput. An attacker capable of deploying a Lua plugin file in specific system directorie…
    CVE-2026-35093 (CVSS 8.8) — A flaw was found in libinput. A local attacker who can place a specially crafted Lua bytecode file in certain …
    CVE-2024-3056 (CVSS 7.7) — A flaw was found in Podman. This issue may allow an attacker to create a specially crafted container that, whe…
    CVE-2024-6293 (CVSS 8.8) — Use after free in Dawn in Google Chrome prior to 126.0.6478.126 allowed a remote attacker to potentially explo…
    CVE-2024-6292 (CVSS 8.8) — Use after free in Dawn in Google Chrome prior to 126.0.6478.126 allowed a remote attacker to potentially explo…
    CVE-2024-6291 (CVSS 8.8) — Use after free in Swiftshader in Google Chrome prior to 126.0.6478.126 allowed a remote attacker to potentiall…
    CVE-2024-6290 (CVSS 8.8) — Use after free in Dawn in Google Chrome prior to 126.0.6478.126 allowed a remote attacker to potentially explo…
    CVE-2024-38277 (CVSS 5.4) — A unique key should be generated for a user's QR login key and their auto-login key, so the same key cannot be…

    References

    http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183736.html
    http://lists.opensuse.org/opensuse-updates/2016-05/msg00086.html
    http://lists.opensuse.org/opensuse-updates/2016-06/msg00027.html
    http://php.net/ChangeLog-5.php
    http://php.net/ChangeLog-7.php
    http://rhn.redhat.com/errata/RHSA-2016-2750.html
    http://www.debian.org/security/2016/dsa-3602
    http://www.openwall.com/lists/oss-security/2016/05/05/21
    http://www.securityfocus.com/bid/90172
    https://bugs.php.net/bug.php?id=72061
    https://git.php.net/?p=php-src.git%3Ba=commit%3Bh=fd9689745c44341b1bd6af4756f324be8abba2fb
    https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
    https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149
    https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722
    https://security.gentoo.org/glsa/201611-22
    http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183736.html
    http://lists.opensuse.org/opensuse-updates/2016-05/msg00086.html
    http://lists.opensuse.org/opensuse-updates/2016-06/msg00027.html
    http://php.net/ChangeLog-5.php
    http://php.net/ChangeLog-7.php
    http://rhn.redhat.com/errata/RHSA-2016-2750.html
    http://www.debian.org/security/2016/dsa-3602
    http://www.openwall.com/lists/oss-security/2016/05/05/21
    http://www.securityfocus.com/bid/90172
    https://bugs.php.net/bug.php?id=72061
    https://git.php.net/?p=php-src.git%3Ba=commit%3Bh=fd9689745c44341b1bd6af4756f324be8abba2fb
    https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
    https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149
    https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722
    https://security.gentoo.org/glsa/201611-22

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High