GHSA-9mrx-mqmg-gwj9 · Severity: medium — Issue summary: A timing side-channel which could potentially allow remote recovery of the private...
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 on 64 bit ARM platforms could allow recovering the private key by an attacker.. While remote key recovery over a network was not attempted by the reporter, timing measurements revealed a timing signal which may allow such an attack. OpenSSL does not directly support certificates with SM2 keys in TLS, and so this CVE is not relevant in most TLS contexts. However, given that it is possible to add support for such certificates via a custom provider, coupled with the fact that in such a custom provider context the private key may be recoverable via remote timing measurements, we consider this to be a Moderate severity issue. The FIPS modules in 3.5, 3.4, 3.3, 3.2, 3.1 and 3.0 are not affected by this issue, as SM2 is not an approved algorithm.
Conclusion & alert: CVE-2025-9231 is rated Low Risk (26.8/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.01%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-11-21 | 0.06% | 0.01% | -0.04% |
| 2 | 2025-11-18 | 0.01% | 0.06% | +0.04% |
| 3 | 2025-10-01 | — | 0.01% | — |
Full EPSS history (3 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.5 | 3.1 | MEDIUM |
|
3.9 | 2.5 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
GHSA-9mrx-mqmg-gwj9 · Severity: medium — Issue summary: A timing side-channel which could potentially allow remote recovery of the private...
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2025-9231: 1 source package rows (openssl); 58 state rows across 5 repos (3.20-main, 3.21-main, 3.22-main, 3.23-main, edge-main); fixed 5, open 53. | https://security.alpinelinux.org/vuln/CVE-2025-9231 |
debian
|
unimportant | CVE-2025-9231 unimportant priority: Debian including 1 source packages (openssl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2025-9231 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2025-9231 |
suse
|
medium | — | https://www.suse.com/security/cve/CVE-2025-9231/ |
ubuntu
|
medium | CVE-2025-9231 medium priority: Ubuntu including 4 source packages (edk2, nodejs, openssl, openssl1.0), 32 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): not-affected 19, needs-triage 6, DNE 4, released 2, needed 1. | https://ubuntu.com/security/CVE-2025-9231 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| No affected products in dataset. | |||