CVE-2022-48570: Cryptopp Crypto++

High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days.

Crypto++ through 8.4 contains a timing side channel in ECDSA signature generation. Function FixedSizeAllocatorWithCleanup could write to memory outside of the allocation if the allocated memory was not 16-byte aligned. NOTE: this issue exists because the CVE-2019-14318 fix was intentionally removed for functionality reasons.

Affected products

• Cryptopp Crypto++: up to and including 8.4.0

Published 2023-08-22. Last modified 2026-06-17.