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Vulnerability record · CVE-2025-9230 · published 30 September 2025

CVE-2025-9230: Openssl out-of-bounds read vulnerability

OOpenssl · Openssl

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.

9.8 CVSS 3.1 Critical EPSS 1.8% · top 21.4% CWE-125 · Out-of-bounds readCWE-787 · Out-of-bounds write
9.8CVSS 3.1 base score
1.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
8Affected product versions listed by NVD
17References
9 Nov 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

8 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/openssl/openssl/commit/5965ea5dd6960f36d8b7f74f8eac67a8eb8f2b45 Patch
https://github.com/openssl/openssl/commit/9e91358f365dee6c446dcdcdb01c04d2743fd280 Patch
https://github.com/openssl/openssl/commit/a79c4ce559c6a3a8fd4109e9f33c1185d5bf2def Patch
https://github.com/openssl/openssl/commit/b5282d677551afda7d20e9c00e09561b547b2dfd Patch
https://github.com/openssl/openssl/commit/bae259a211ada6315dc50900686daaaaaa55f482 Patch
https://github.openssl.org/openssl/extended-releases/commit/c2b96348bfa662f25f4fabf81958ae822063dae3 Permissions Required
https://github.openssl.org/openssl/extended-releases/commit/dfbaf161d8dafc1132dd88cd48ad990ed9b4c8ba Permissions Required
https://openssl-library.org/news/secadv/20250930.txt Vendor Advisory
http://www.openwall.com/lists/oss-security/2025/09/30/5 Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00001.html Mailing ListThird Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-032379.html Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-082556.html Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-089022.html Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-253495.html Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-265688.html Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-485750.html Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-585531.html Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2025-9230), CISA KEV, FIRST EPSS (scores of 2026-11-13). This page is refreshed as NVD updates the record.