CVE-2026-17544

CVE-2026-17544 — PHP bcmath OOB write → universal memory-only RCE A weaponized proof-of-concept for CVE-2026-17544 , an out-of-bounds write in PHP's rewritten bcmath extension bcstr2num. This turns the publicly known DoS-only crash into a full, universal, memory-only remote code execution primiti...

CVE-2026-17544-PoC

CVE-2026-17544 — PHP bcmath bccomp 領域外書き込み（スタック破壊） CVSS 9.8（緊急） · CWE-787 · GHSA-x692-q9x7-8c3f 概要 ext/bcmath/libbcmath/src/str2num.c（ベンダリングされた libbcmath、PHP 8.4+）の bcstr2num に、 off-by-N の領域外書き込みが存在します。ユーザー指定の scale がオペランドの自動 スケールより小さい場合、小数部が切り詰められ、その後 fractionalend を更新せずに...

Rocky Linux 8.6 [CIQ] Security Update: php / php-bcmath / php-bcmath-debuginfo / php-cli / etc Multiple Vulnerabilities (ciqsa-2026_0138)

The Rocky Linux 8.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ ciqsa-20260138 advisory. This advisory aggregates security fixes for the php SRPM in CIQ LTS 8.6. It addresses 2 CVEs: CVE-2020-28949, CVE-2020-36193. Tenable has extracted the...

AlmaLinux 9.2 [TuxCare] Security Update: php / php-bcmath / php-cli / php-common / php-dba / php-dbg / etc (ALMALINUX9.2:CLSA-2026:1778240943)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1778240943 advisory. Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number. %NASLMINLEVEL...

CentOS Linux 7 [TuxCare] Security Update: php / php-bcmath / php-cli / php-common / php-dba / php-devel / etc (CENTOS7:CLSA-2025:1738695324)

The CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS7:CLSA-2025:1738695324 advisory. Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number. %NASLMINLEVEL 80900...

AlmaLinux 9.2 [TuxCare] Security Update: php / php-bcmath / php-cli / php-common / php-dba / php-dbg / etc (ALMALINUX9.2:CLSA-2025:1757946824)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2025:1757946824 advisory. Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number. %NASLMINLEVEL...

Rocky Linux 9 [CIQ] Security Update: php / php-bcmath / php-bcmath-debuginfo / php-cli / etc Multiple Vulnerabilities (crlsa-2025_7431)

The Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-20257431 advisory. php: Header parser of http stream wrapper does not handle folded headers CVE-2025-1217 php: Stream HTTP wrapper header check might omit basic auth header...

CentOS Linux 6 [TuxCare] Security Update: php / php-bcmath / php-cli / php-common / php-dba / php-devel / etc Multiple Vulnerabilities (CENTOS6:CLSA-2025:1756483990)

The CentOS Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS6:CLSA-2025:1756483990 advisory. Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number...

AlmaLinux 9.6 [TuxCare] Security Update: php / php-bcmath / php-cli / php-common / php-dba / php-dbg / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1768411712)

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1768411712 advisory. - In PHP versions:8.1. before 8.1.33, 8.2. before 8.2.29, 8.3. before 8.3.23, 8.4. before 8.4.10 some functions like fsockopen lack...

Rocky Linux 10.0 [CIQ] Security Update: php / php-bcmath / php-bcmath-debuginfo / php-cli / etc Multiple Vulnerabilities (crlsa-2025_7489)

The Rocky Linux 10.0 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-20257489 advisory. php: Header parser of http stream wrapper does not handle folded headers CVE-2025-1217 php: Stream HTTP wrapper header check might omit basic auth heade...

AlmaLinux 9.2 [TuxCare] Security Update: php / php-bcmath / php-cli / php-common / php-dba / php-dbg / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2025:1753981912)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2025:1753981912 advisory. Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number...

Rocky Linux 9 [CIQ] Security Update: php / php-bcmath / php-bcmath-debuginfo / php-cli / etc Multiple Vulnerabilities (crlsa-2022_8197)

The Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-20228197 advisory. php: Use after free due to phpfilterfloat failing for ints CVE-2021-21708 php: Uninitialized array in pgqueryparams leading to RCE CVE-2022-31625 Tenable h...

CentOS Linux 6 [TuxCare] Security Update: php / php-bcmath / php-cli / php-common / php-dba / php-devel / etc Multiple Vulnerabilities (CENTOS6:CLSA-2026:1787229717)

The CentOS Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS6:CLSA-2026:1787229717 advisory. - Circular symbolic links in phar archives could lead to unbounded recursion, exhausting the C stack and crashing the PHP process, in PH...

CentOS Linux 7 [TuxCare] Security Update: php / php-bcmath / php-cli / php-common / php-dba / php-devel / etc (CENTOS7:CLSA-2025:1753780622)

The CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS7:CLSA-2025:1753780622 advisory. - In PHP versions:8.1. before 8.1.33, 8.2. before 8.2.29, 8.3. before 8.3.23, 8.4. before 8.4.10 some functions like fsockopen lack validation th...

CentOS Linux 7 [TuxCare] Security Update: php / php-bcmath / php-cli / php-common / php-dba / php-devel / etc (CENTOS7:CLSA-2024:1733246329)

The CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS7:CLSA-2024:1733246329 advisory. Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number. %NASLMINLEVEL 80900...

AlmaLinux 9.2 [TuxCare] Security Update: php / php-bcmath / php-cli / php-common / php-dba / php-dbg / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2025:1738691753)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2025:1738691753 advisory. - Due to an incomplete fix to CVE-2022-31629 https://github.com/advisories/GHSA-c43m-486j-j32p , network and same-site attackers can...

CentOS Linux 8 [TuxCare] Security Update: php / php-bcmath / php-embedded / php-intl / php-mysqlnd / etc Multiple Vulnerabilities (CENTOS-STREAM8:CLSA-2025:1746654810)

The CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS-STREAM8:CLSA-2025:1746654810 advisory. Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number...

CentOS Linux 7 [TuxCare] Security Update: php / php-bcmath / php-cli / php-common / php-dba / php-devel / etc (CENTOS7:CLSA-2024:1730141462)

The CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS7:CLSA-2024:1730141462 advisory. - In PHP versions 8.1. before 8.1.30, 8.2. before 8.2.24, 8.3. before 8.3.12, erroneous parsing of multipart form data contained in an HTTP POST...

CentOS Linux 7 [TuxCare] Security Update: php / php-bcmath / php-cli / php-common / php-dba / php-devel / etc (CENTOS7:CLSA-2025:1756322698)

The CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS7:CLSA-2025:1756322698 advisory. Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number. %NASLMINLEVEL 80900...

Amazon Linux 2023 : php8.2, php8.2-bcmath, php8.2-cli (ALAS2023-2025-1354)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-1354 advisory. NOTE: https://github.com/php/php-src/security/advisories/GHSA-3237-qqm7-mfv7NOTE: https://github.com/php/php-src/commit/c5f28c7cf0a052f48e47877c7aa5c5bcc54f1cfcDEBIANBUG: 1123574 CVE-2025-1417...