CVE-2025-9230High· 7.5▾ Twilight

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 Ser…

▾ Twilight zone — High severity, or a signal on a lesser flaw

Depth score42/ 100 · Moderate

impact 41.3 · likelihood 0.3 · exploitation 0

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Proof of concept

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Published

Sep 30, 2025

Updated

Oct 15, 2026

CVSS

7.5

Vendor

OpenSSL

Product

OpenSSL

CWE

CWE-125, CWE-787

Depth score

42 · Moderate

EPSS

1.6% · p75

Platforms

—

Source

NVD

Vector

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

CISA SSVC

decided 2025-09-30

Exploitation: none
Automatable: no
Technical impact: partial

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

3 events · 380 days

Sep 30, 2025Published
Disclosed via NVD
Oct 15, 2026Record revised
Last analysed / modified upstream
Oct 15, 2026EPSS first tracked
1.6%

OpenSSL CWE-125 CWE-787 #nvd #cve.org

Affected

OpenSSL >= 3.5.0 < 3.5.4
OpenSSL >= 3.4.0 < 3.4.3
OpenSSL >= 3.3.0 < 3.3.5
OpenSSL >= 3.2.0 < 3.2.6
OpenSSL >= 3.0.0 < 3.0.18
OpenSSL >= 1.1.1 < 1.1.1zd
OpenSSL >= 1.0.2 < 1.0.2zm

Full technical detail▾

Overview

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.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#cve.org