HIGH

CVE-2023-33242

CVSS v3

8.1

HIGH

EPSS Score

1.5 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2023-33242 yet.

Full record on NVD

Description

Crypto wallets implementing the Lindell17 TSS protocol might allow an attacker to extract the full ECDSA private key by exfiltrating a single bit in every signature attempt (256 in total) because of not adhering to the paper's security proof's assumption regarding handling aborts after a failed signature.

Technical details

Published: 2023-08-09

Frequently asked questions

What is CVE-2023-33242?

Is CVE-2023-33242 actively exploited?

Active exploitation of CVE-2023-33242 has not been confirmed. Its EPSS score was 1.5% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-33242?

CVE-2023-33242 has a CVSS v3 base score of 8.1 (HIGH severity).

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