CVE-2025-9230: OpenSSL

High severity, CVSS 7.5. EPSS: 1.6% chance of exploitation in the next 30 days.

Issue summary: An application trying to decrypt CMS messages encrypted using password based encryption can trigger an out-of-bounds read and write. Impact summary: This out-of-bounds read may trigger a crash which leads to Denial of Service for an application. The out-of-bounds write can cause a memory corruption which can have various consequences including a Denial of Service or Execution of attacker-supplied code. Although the consequences of a successful exploit of this vulnerability could be severe, the probability that the attacker would be able to perform it is low. Besides, password based (PWRI) encryption support in CMS messages is very rarely used. For that reason the issue was assessed as Moderate severity according to our Security Policy. The FIPS modules in 3.5, 3.4, 3.3, 3.2, 3.1 and 3.0 are not affected by this issue, as the CMS implementation is outside the OpenSSL FIPS module boundary.

Affected products

  • OpenSSL OpenSSL: from 3.5.0, before 3.5.4 (fixed in 3.5.4); from 3.4.0, before 3.4.3 (fixed in 3.4.3); from 3.3.0, before 3.3.5 (fixed in 3.3.5); from 3.2.0, before 3.2.6 (fixed in 3.2.6); from 3.0.0, before 3.0.18 (fixed in 3.0.18); from 1.1.1, before 1.1.1zd (fixed in 1.1.1zd); …
  • Siemens Ruggedcom RST2428P: before V3.3 (fixed in V3.3); before V4.0 (fixed in V4.0)
  • Siemens Scalance Xc-300/xr-300/xc-400/xr-500wg/xr-500 Family: before V3.3 (fixed in V3.3)
  • Siemens Scalance XCH328: before V3.3 (fixed in V3.3)
  • Siemens Scalance XCM324: before V3.3 (fixed in V3.3)
  • Siemens Scalance XCM328: before V3.3 (fixed in V3.3)
  • Siemens Scalance XCM332: before V3.3 (fixed in V3.3)
  • Siemens Scalance XRH334 24 V Dc, 8xfo, Cc: before V3.3 (fixed in V3.3)
  • Siemens Scalance XRM334 230 V Ac, 12xfo: before V3.3 (fixed in V3.3)
  • Siemens Scalance XRM334 230 V Ac, 8xfo: before V3.3 (fixed in V3.3)
  • Siemens Scalance XRM334 230v Ac, 2x10g, 24xsfp, 8xsfp+: before V3.3 (fixed in V3.3)
  • Siemens Scalance XRM334 24 V Dc, 12xfo: before V3.3 (fixed in V3.3)
  • Siemens Scalance XRM334 24 V Dc, 8xfo: before V3.3 (fixed in V3.3)
  • Siemens Scalance XRM334 24v Dc, 2x10g, 24xsfp, 8xsfp+: before V3.3 (fixed in V3.3)
  • Siemens Scalance XRM334 2x230 V Ac, 12xfo: before V3.3 (fixed in V3.3)
  • Siemens Scalance XRM334 2x230 V Ac, 8xfo: before V3.3 (fixed in V3.3)
  • Siemens Scalance XRM334 2x230v Ac, 2x10g, 24xsfp, 8xsfp+: before V3.3 (fixed in V3.3)
  • Siemens Sidis Prime: before V4.0.800 (fixed in V4.0.800)
  • Siemens Sidis Secured Smartplug: before V7.26.0310 (fixed in V7.26.0310)
  • Siemens SIMATIC Cn 4100: before V5.0 (fixed in V5.0)
  • Siemens SIMATIC s7-1500 CPU 1518-4 Pn/dp Mfp: from V3.1.5
  • Siemens SIMATIC s7-1500 CPU 1518f-4 Pn/dp Mfp: from V3.1.5
  • Siemens SIMATIC s7-1500 TM Mfp - Gnu/linux Subsystem: any version
  • Siemens Siplus s7-1500 CPU 1518-4 Pn/dp Mfp: from V3.1.5

Published 2025-09-30. Last modified 2026-07-14.