Vulnerability in Openssl
CVE-2025-9231
Issue summary: A timing side-channel which could potentially allow remote recovery of the private key exists in the SM2 algorithm implementation on 64 bit ARM platforms. Impact summary: A timing side-channel in SM2 signature computations…
EPSS: 0.000 (10.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L.
Affected products
- Openssl — versions 3.5.0, 3.4.0, 3.3.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- openssl-security@openssl.org (vendor-advisory)
- openssl-security@openssl.org (patch)
- openssl-security@openssl.org (patch)
- openssl-security@openssl.org (patch)
- openssl-security@openssl.org (patch)
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Frequently asked questions
- What is CVE-2025-9231?
- CVE-2025-9231 is a medium-severity vulnerability in Openssl, classified under CWE-385. CVSS score: 6.5/10. Published 2025-09-30.
- How severe is CVE-2025-9231?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2025-9231 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.