# CVE-2025-9230: Out-of-bounds read & write in RFC 3211 KEK Unwrap

> CVE-2025-9230: Out-of-bounds read & write in RFC 3211 KEK Unwrap. CVSS 7.5 (CVSS 3.1), named in 1 status incident(s).

Canonical: https://rewindex.com/cve/CVE-2025-9230
Last updated: 2026-10-15T02:18:27Z

- Published: 2025-09-30 13:17 UTC · Updated: 2026-10-15 02:18 UTC · Assigner: openssl
- CVSS: 7.5 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS: n/a
- CISA KEV: no
- CWE: CWE-125, CWE-787

## 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.

## Affected vendors and products

- OpenSSL: OpenSSL
- Siemens: RUGGEDCOM RST2428P
- Siemens: SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family
- Siemens: SCALANCE XCH328
- Siemens: SCALANCE XCM324
- Siemens: SCALANCE XCM328
- Siemens: SCALANCE XCM332
- Siemens: SCALANCE XRH334 (24 V DC, 8xFO, CC)
- Siemens: SCALANCE XRM334 (230 V AC, 12xFO)
- Siemens: SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+)
- Siemens: SCALANCE XRM334 (230 V AC, 8xFO)
- Siemens: SCALANCE XRM334 (24 V DC, 12xFO)
- Siemens: SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+)
- Siemens: SCALANCE XRM334 (24 V DC, 8xFO)
- Siemens: SCALANCE XRM334 (2x230 V AC, 12xFO)
- Siemens: SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+)
- Siemens: SCALANCE XRM334 (2x230 V AC, 8xFO)
- Siemens: SIDIS Prime
- Siemens: SIDIS Secured SmartPlug
- Siemens: SIMATIC CN 4100
- Siemens: SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
- Siemens: SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
- Siemens: SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
- Siemens: SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

## Status incidents that name it

- 2025-10-01 03:00 UTC [Aptible: \[Scheduled\] Security Patching of OpenSSL Vulnerability (CVE-2025-9230)](https://rewindex.com/company/aptible/incidents/kl0g3hsqbhtd.md) (names this CVE): “\[Scheduled\] Security Patching of OpenSSL Vulnerability (CVE-2025-9230) The scheduled maintenance has been completed.”

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-9230)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-9230)
- [https://github.com/openssl/openssl/commit/5965ea5dd6960f36d8b7f74f8eac67a8eb8f2b45](https://github.com/openssl/openssl/commit/5965ea5dd6960f36d8b7f74f8eac67a8eb8f2b45)
- [https://github.com/openssl/openssl/commit/9e91358f365dee6c446dcdcdb01c04d2743fd280](https://github.com/openssl/openssl/commit/9e91358f365dee6c446dcdcdb01c04d2743fd280)
- [https://github.com/openssl/openssl/commit/a79c4ce559c6a3a8fd4109e9f33c1185d5bf2def](https://github.com/openssl/openssl/commit/a79c4ce559c6a3a8fd4109e9f33c1185d5bf2def)
- [https://github.com/openssl/openssl/commit/b5282d677551afda7d20e9c00e09561b547b2dfd](https://github.com/openssl/openssl/commit/b5282d677551afda7d20e9c00e09561b547b2dfd)
- [https://github.com/openssl/openssl/commit/bae259a211ada6315dc50900686daaaaaa55f482](https://github.com/openssl/openssl/commit/bae259a211ada6315dc50900686daaaaaa55f482)
- [https://github.openssl.org/openssl/extended-releases/commit/c2b96348bfa662f25f4fabf81958ae822063dae3](https://github.openssl.org/openssl/extended-releases/commit/c2b96348bfa662f25f4fabf81958ae822063dae3)
- [https://github.openssl.org/openssl/extended-releases/commit/dfbaf161d8dafc1132dd88cd48ad990ed9b4c8ba](https://github.openssl.org/openssl/extended-releases/commit/dfbaf161d8dafc1132dd88cd48ad990ed9b4c8ba)
- [https://openssl-library.org/news/secadv/20250930.txt](https://openssl-library.org/news/secadv/20250930.txt)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-9230 · Markdown: https://rewindex.com/cve/CVE-2025-9230.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-9230 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:01:00.160Z