--- id: CVE-2019-11046 title: >- In PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0, PHP bcmath extension functions on some systems, including Windows, can be tricked into reading beyond the allocated space by supplying it with string containing characters… summary: >- In PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0, PHP bcmath extension functions on some systems, including Windows, can be tricked into reading beyond the allocated space by supplying it with string containing characters… severity: low cvss: 3.7 cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N' cwe: - CWE-125 - CWE-125 vendor: php product: php affected: - 'php >= 7.2.0, <= 7.2.26' - 'php >= 7.3.0, <= 7.3.13' - php = 7.4.0 - debian_linux = 8.0 - debian_linux = 9.0 - debian_linux = 10.0 - fedora = 30 - fedora = 31 - leap = 15.1 - ubuntu_linux = 12.04 - ubuntu_linux = 14.04 - ubuntu_linux = 16.04 - ubuntu_linux = 18.04 - ubuntu_linux = 19.04 - ubuntu_linux = 19.10 - security_center < 5.19.0 patched: - security_center 5.19.0 published: '2019-12-23' updated: '2026-08-17' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2019-11046' references: - url: 'http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00036.html' label: security@php.net - url: 'https://bugs.php.net/bug.php?id=78878' label: security@php.net - url: 'https://lists.debian.org/debian-lts-announce/2019/12/msg00034.html' label: security@php.net - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N7GCOAE6KVHYJ3UQ4KLPLTGSLX6IRVRN/ label: security@php.net - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWRQPYXVG43Q7DXMXH6UVWMKWGUW552F/ label: security@php.net - url: 'https://seclists.org/bugtraq/2020/Feb/27' label: security@php.net - url: 'https://seclists.org/bugtraq/2020/Feb/31' label: security@php.net - url: 'https://seclists.org/bugtraq/2021/Jan/3' label: security@php.net - url: 'https://security.netapp.com/advisory/ntap-20200103-0002/' label: security@php.net - url: >- https://support.f5.com/csp/article/K48866433?utm_source=f5support&%3Butm_medium=RSS label: security@php.net - url: 'https://usn.ubuntu.com/4239-1/' label: security@php.net - url: 'https://www.debian.org/security/2020/dsa-4626' label: security@php.net - url: 'https://www.debian.org/security/2020/dsa-4628' label: security@php.net - url: 'https://www.tenable.com/security/tns-2021-14' label: security@php.net - url: 'http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00036.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://bugs.php.net/bug.php?id=78878' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://lists.debian.org/debian-lts-announce/2019/12/msg00034.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N7GCOAE6KVHYJ3UQ4KLPLTGSLX6IRVRN/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWRQPYXVG43Q7DXMXH6UVWMKWGUW552F/ label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://seclists.org/bugtraq/2020/Feb/27' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://seclists.org/bugtraq/2020/Feb/31' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://seclists.org/bugtraq/2021/Jan/3' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://security.netapp.com/advisory/ntap-20200103-0002/' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://support.f5.com/csp/article/K48866433?utm_source=f5support&%3Butm_medium=RSS label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://usn.ubuntu.com/4239-1/' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.debian.org/security/2020/dsa-4626' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.debian.org/security/2020/dsa-4628' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.tenable.com/security/tns-2021-14' label: af854a3a-2127-422b-91ae-364da2661108 tags: - nvd epss: 0.04082 epssPercentile: 0.90259 ingestedAt: '2026-08-17T14:55:58.871Z' --- ## Overview In PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0, PHP bcmath extension functions on some systems, including Windows, can be tricked into reading beyond the allocated space by supplying it with string containing characters that are identified as numeric by the OS but aren't ASCII numbers. This can read to disclosure of the content of some memory locations. ## Affected - `php >= 7.2.0, <= 7.2.26` - `php >= 7.3.0, <= 7.3.13` - `php = 7.4.0` - `debian_linux = 8.0` - `debian_linux = 9.0` - `debian_linux = 10.0` - `fedora = 30` - `fedora = 31` - `leap = 15.1` - `ubuntu_linux = 12.04` - `ubuntu_linux = 14.04` - `ubuntu_linux = 16.04` - `ubuntu_linux = 18.04` - `ubuntu_linux = 19.04` - `ubuntu_linux = 19.10` - `security_center < 5.19.0` ## Remediation Upgrade past the affected range: - `security_center 5.19.0`