CVE-2025-9231

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

2.24% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 82.6% of scored records. A rank, not a probability.

NVD base score

6.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-07-14.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2025-09-30 13:17Z1 YR AGO

Last updated

2026-07-14 12:39Z3 MO AGO

Reserved

2025-08-20

Assigning CNA

openssl

Record state

PUBLISHED

Severity

Medium (CVSS 6.5)

CNA CVSS vector

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

Weaknesses

• CWE-385Covert Timing ChannelBase
• CWE-208Observable Timing DiscrepancyBase

Data version

5.2

Document digest

7a2d0e68ed2fb7c354dadf54106e2564aec8eb0b86b98757165193f0936bca05

• openssl-library.orgOpenSSL Advisoryhttps://openssl-library.org/news/secadv/20250930.txtvendor-advisory
• github.com3.5.4 git commithttps://github.com/openssl/openssl/commit/fc47a2ec078912b3e914fab5734535e76c4820c2patch
• github.com3.4.3 git commithttps://github.com/openssl/openssl/commit/eed5adc9f969d77c94f213767acbb41ff923b6f4patch
• github.com3.3.5 git commithttps://github.com/openssl/openssl/commit/567f64386e43683888212226824b6a179885a0fepatch
• github.com3.2.6 git commithttps://github.com/openssl/openssl/commit/cba616c26ac8e7b37de5e77762e505ba5ca51698patch
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2025/09/30/5
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/05/11/11
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-089022.html
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-032379.html
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-253495.html
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-585531.html