Ce mail provient de l'extérieur, restons vigilants ===================================================================== CERT-Renater Note d'Information No. 2026/VULN1117 _____________________________________________________________________ DATE : 02/11/2026 HARDWARE PLATFORM(S): / OPERATING SYSTEM(S): Synology DSM running Synology Calendar, Hyper Backup Mail Station PHP versions 7.3, 7.4, 8.0, 8.1, 8.2, 8.3, 8.4. ==================================================================== https://www.synology.com/en-global/security/advisory/Synology_SA_26_14 _____________________________________________________________________ Synology-SA-26:14 PHP2Shell Publish Time: 2026-10-22 19:45:00 UTC+8 Last Updated: 2026-10-31 14:25:24 UTC+8 Severity Critical Status Resolved Abstract Multiple vulnerabilities allow remote attackers to execute arbitrary code via susceptible versions of the following packages in DSM: Synology Calendar Hyper Backup Mail Station PHP 7.3, PHP 7.4, PHP 8.0, PHP 8.1, PHP 8.2, PHP 8.3, and PHP 8.4 Please refer to the ‘Affected Products’ table for the corresponding updates. Affected Products Product Severity Fixed Release Availability Synology Calendar Critical Upgrade to 3.0.4-21435 or above. (DSM 7.2 or above) Upgrade to 2.4.8-10948 or above. (DSM 7.0 – 7.1) Upgrade to 2.4.8-0948 or above. (DSM 6.2) Hyper Backup Not affected N/A Mail Station Critical Upgrade to 30000002.3.19-20333 or above. (DSM 7.2 or above) Upgrade to 30000002.3.19-10333 or above. (DSM 7.0 – 7.1) Upgrade to 30000002.3.19-0333 or above. (DSM 6.2) PHP 7.3 Critical No fix will be provided as this version has reached end of life. PHP 7.4 Critical Upgrade to 7.4.33-0131 or above. (DSM 7.2 or above) Upgrade to 7.4.33-0122 or above. (DSM 7.0 – 7.1) Upgrade to 7.4.33-0010 or above. (DSM 6.2) PHP 8.0 Critical Upgrade to 8.0.30-0122 or above. (DSM 7.2 or above) Upgrade to 8.0.30-0104 or above. (DSM 7.0 – 7.1) PHP 8.1 Critical Upgrade to 8.1.34-0120 or above. PHP 8.2 Critical Upgrade to 8.2.35-0171 or above. PHP 8.3 Critical Upgrade to 8.3.36-0051 or above. PHP 8.4 Critical Upgrade to 8.4.27-0051 or above. Mitigation https://github.com/php/php-src/security/advisories/GHSA-w8hw-w9fx-j79w https://github.com/php/php-src/security/advisories/GHSA-6wmf-4rv5-p3rp The built-in PHP in OS is not exposed to external attack surfaces, and the risk of exploitation is considered very low. Detail CVE-2026-109618 Severity: Critical CVSS3 Base Score: 9.8 CVSS3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CWE-1325: Improperly Controlled Sequential Memory Allocation PHP uses longjmp() for out-of-memory (OOM) errors to exit the current context and abort handling of the request. Some contexts may not properly account for this scenario and leave request memory in an uninitialized state before performing an allocation. The subsequent request cleanup procedure may read or branch on this memory. Multiple OOM strategies can consistently trigger this condition and lead to remote code execution (RCE). CVE-2026-109619 Severity: Critical CVSS3 Base Score: 9.8 CVSS3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CWE-1325: Improperly Controlled Sequential Memory Allocation PHP has various global state that temporarily points into request memory. In some scenarios, global state may not be correctly reset, or may be repopulated after being reset. The global state may then refer to request memory even after it has been freed. Subsequent requests may read or branch on this stale state before it is fully initialized. Multiple strategies can trigger this condition and produce remote code execution (RCE). Reference php.net Revision Revision Date Description 1 2026-10-22 Initial public release. 2 2026-10-26 Add Hyper Backup package. 3 2026-10-29 Add PHP 7.4 for DSM 6.2, DSM 7.0, and DSM 7.1. Add PHP 8.0 for DSM 7.0 and DSM 7.1. 4 2026-10-31 Add Synology Calendar for DSM 6.2, DSM 7.0, and DSM 7.1. Add Mail Station for DSM 6.2, DSM 7.0, and DSM 7.1. ========================================================= + CERT-RENATER | tel : 01-53-94-20-44 + + 23/25 Rue Daviel | fax : 01-53-94-20-41 + + 75013 Paris | email:cert@support.renater.fr + =========================================================