Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| OpenSSL | OpenSSL | >= 3.5.0, < 3.5.4; >= 3.4.0, < 3.4.3; >= 3.3.0, < 3.3.5; >= 3.2.0, < 3.2.6; >= 3.0.0, < 3.0.18; >= 1.1.1, < 1.1.1zd; >= 1.0.2, < 1.0.2zm |
| Siemens | RUGGEDCOM RST2428P | < V3.3 |
| Siemens | RUGGEDCOM RST2428P | < V4.0 |
| Siemens | SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family | < V3.3 |
| Siemens | SCALANCE XCH328 | < V3.3 |
| Siemens | SCALANCE XCM324 | < V3.3 |
| Siemens | SCALANCE XCM328 | < V3.3 |
| Siemens | SCALANCE XCM332 | < V3.3 |
| Siemens | SCALANCE XRH334 (24 V DC, 8xFO, CC) | < V3.3 |
| Siemens | SCALANCE XRM334 (230 V AC, 12xFO) | < V3.3 |
| Siemens | SCALANCE XRM334 (230 V AC, 8xFO) | < V3.3 |
| Siemens | SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+) | < V3.3 |
| Siemens | SCALANCE XRM334 (24 V DC, 12xFO) | < V3.3 |
| Siemens | SCALANCE XRM334 (24 V DC, 8xFO) | < V3.3 |
| Siemens | SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+) | < V3.3 |
| Siemens | SCALANCE XRM334 (2x230 V AC, 12xFO) | < V3.3 |
| Siemens | SCALANCE XRM334 (2x230 V AC, 8xFO) | < V3.3 |
| Siemens | SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+) | < V3.3 |
| Siemens | SIDIS Prime | < V4.0.800 |
| Siemens | SIDIS Secured SmartPlug | < V7.26.0310 |
| Siemens | SIMATIC CN 4100 | < V5.0 |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.5, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.5, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | >= V3.1.5, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | >= V3.1.5, < * |
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | < V1.1.1 |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.5, < * |
References
- https://github.com/openssl/openssl/commit/5965ea5dd6960f36d8b7f74f8eac67a8eb8f2b45Patch
- https://github.com/openssl/openssl/commit/9e91358f365dee6c446dcdcdb01c04d2743fd280Patch
- https://github.com/openssl/openssl/commit/a79c4ce559c6a3a8fd4109e9f33c1185d5bf2defPatch
- https://github.com/openssl/openssl/commit/b5282d677551afda7d20e9c00e09561b547b2dfdPatch
- https://github.com/openssl/openssl/commit/bae259a211ada6315dc50900686daaaaaa55f482Patch
- https://github.openssl.org/openssl/extended-releases/commit/c2b96348bfa662f25f4fabf81958ae822063dae3Permissions Required
- https://github.openssl.org/openssl/extended-releases/commit/dfbaf161d8dafc1132dd88cd48ad990ed9b4c8baPermissions Required
- https://openssl-library.org/news/secadv/20250930.txtVendor Advisory
- http://www.openwall.com/lists/oss-security/2025/09/30/5Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00001.htmlMailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-032379.htmlThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-082556.htmlThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-089022.htmlThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-253495.htmlThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-265688.htmlThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-485750.htmlThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-585531.htmlThird Party Advisory
Timeline
- Published
- Sep 30, 2025
- Last modified
- Nov 9, 2026
- NVD status
- Analyzed