How severe is CVE-2026-43606?

CVE-2026-43606 has a CVSS 4.0 base score of 8.5, rated high severity.

Is CVE-2026-43606 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-43606?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-43606 published?

CVE-2026-43606 was published on 2026-08-11 and last updated on 2026-08-12.

CVE-2026-43606

CVE-2026-43606 is a high-severity vulnerability with a CVSS 4.0 base score of 8.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-208.

Key facts

Severity: High (CVSS 4.0 base score 8.5)
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-208
Published: 2026-08-11
Last modified: 2026-08-12

Description

Observable Timing Discrepancy in the AMD Vitis Libraries ECDSA secp256k1 component could allow attackers with local access to potentially perform timing analysis or electromagnetic emanation attacks, resulting in high confidentiality and integrity impact due to the exposure of private cryptographic keys.

Frequently asked questions

What is CVE-2026-43606?: Observable Timing Discrepancy in the AMD Vitis Libraries ECDSA secp256k1 component could allow attackers with local access to potentially perform timing analysis or electromagnetic emanation attacks, resulting in high confidentiality and integrity impact due to the exposure of private cryptographic keys.
How severe is CVE-2026-43606?: CVE-2026-43606 has a CVSS 4.0 base score of 8.5, rated high severity.
Is CVE-2026-43606 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-43606?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-43606 published?: CVE-2026-43606 was published on 2026-08-11 and last updated on 2026-08-12.

References

https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-8015.html

Other CWE-208 vulnerabilities

CVE-2023-41313 — Critical (CVSS 9.8): The authentication method in Apache Doris versions before 2.0.0 was vulnerable to timing attacks. Users are recommended…
CVE-2026-16315 — High (CVSS 8.7): OMICRON StationGuard before version 4.10 contains a cryptographic timing side-channel vulnerability in the backend…
CVE-2024-42512 — High (CVSS 8.6): Vulnerability in the OPC UA .NET Standard Stack before 1.5.374.158 allows an unauthorized attacker to bypass…
CVE-2025-53940 — High (CVSS 8.5): Quiet is an alternative to team chat apps like Slack, Discord, and Element that does not require trusting a central…
CVE-2026-16731 — High (CVSS 8.3): OMICRON StationScout before version 3.05 contains a cryptographic timing side-channel vulnerability in the backend…
CVE-2026-69247 — High (CVSS 8.2): cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. From 44.0.0…

Browse all CWE-208 vulnerabilities →