CVE-2026-43606
Timing leak in AMD Vitis ECDSA secp256k1 can expose private keys.
Is CVE-2026-43606 being exploited?
Not confirmed. CVE-2026-43606 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.12% probability of exploitation in the next 30 days.
How severe is CVE-2026-43606?
CVE-2026-43606 is rated High with a CVSS score of 8.5. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-43606?
Not known from our data. No patch reference has been recorded for CVE-2026-43606, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-43606 affect?
CVE-2026-43606 affects AMD Vitis Libraries ECDSA secp256k1 component, FPGA/SoC toolchains using AMD Vitis, Embedded devices built with affected Vitis crypto. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-43606?
Restrict local/physical access, rotate affected keys, disable Vitis ECDSA where possible, apply vendor patch when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Local timing/EM analysis can extract ECDSA secp256k1 private keys, enabling signature forgery and full key compromise.
Immediate action required