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CVE-2025-9231 is a timing side-channel vulnerability in OpenSSL's SM2 algorithm implementation affecting 64-bit ARM platforms. The issue arises during SM2 signature computations, where execution time varies in a way that may leak information about the private key through timing measurements. OpenSSL assessed the flaw as relevant primarily to environments using SM2 on 64-bit ARM, especially where SM2 private-key operations are exposed remotely. OpenSSL does not natively use SM2 certificates in standard TLS deployments, so most TLS configurations are not affected unless SM2 support has been added through a custom provider. The OpenSSL FIPS modules for the affected branches are not impacted because SM2 is not an approved algorithm in those modules.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
37 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A timing side-channel vulnerability in the SM2 algorithm on 64-bit ARM systems in OpenSSL.
A timing side-channel in the SM2 algorithm on 64-bit ARM in OpenSSL.
A timing side-channel vulnerability in the SM2 algorithm on 64-bit ARM in OpenSSL, fixed in the 3.5.4 security patch release.
An OpenSSL timing side-channel vulnerability affecting the SM2 algorithm on 64-bit ARM.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.