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CVE-2025-9232 Detail

Description

Issue summary: An application using the OpenSSL HTTP client API functions may trigger an out-of-bounds read if the 'no_proxy' environment variable is set and the host portion of the authority component of the HTTP URL is an IPv6 address. Impact summary: An out-of-bounds read can trigger a crash which leads to Denial of Service for an application. The OpenSSL HTTP client API functions can be used directly by applications but they are also used by the OCSP client functions and CMP (Certificate Management Protocol) client implementation in OpenSSL. However the URLs used by these implementations are unlikely to be controlled by an attacker. In this vulnerable code the out of bounds read can only trigger a crash. Furthermore the vulnerability requires an attacker-controlled URL to be passed from an application to the OpenSSL function and the user has to have a 'no_proxy' environment variable set. For the aforementioned reasons the issue was assessed as Low severity. The vulnerable code was introduced in the following patch releases: 3.0.16, 3.1.8, 3.2.4, 3.3.3, 3.4.0 and 3.5.0. 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 HTTP client implementation is outside the OpenSSL FIPS module boundary.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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URL Source(s) Tag(s)
CVE
siemens-SADP
siemens-SADP
siemens-SADP
siemens-SADP
OpenSSL Software Foundation
OpenSSL Software Foundation
OpenSSL Software Foundation
OpenSSL Software Foundation
OpenSSL Software Foundation
OpenSSL Software Foundation

Weakness Enumeration

CWE-ID CWE Name Source
CWE-125 Out-of-bounds Read OpenSSL Software Foundation  

Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-9232
NVD Published Date:
09/30/2025
NVD Last Modified:
05/12/2026
Source:
OpenSSL Software Foundation