AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

OR
          *cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:* versions from (including) 5.6.4 up to (excluding) 5.9.2

wolfSSL Inc.: https://github.com/wolfSSL/wolfssl/pull/10536 Types: Issue Tracking, Patch

wolfSSL Inc.: https://www.wolfssl.com/docs/security-vulnerabilities/ Types: Vendor Advisory

{"timestamp":"2026-06-26T13:49:37.963089Z","id":"CVE-2026-10512","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

The X25519 x86_64 assembly implementation fails to clear the most significant bit during the final modular reduction, so the computed result may not be fully reduced modulo the field prime 2^255 - 19. This can leave the field element in a non-canonical form, producing an incorrect result from the scalar multiplication and potentially a wrong shared secret. The final carry-propagation chains in the x64 and AVX2 reduction routines could overflow into the top bit, and the high limb was not masked afterward, so the 255-bit field element was left non-canonical.

AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CWE-682

https://github.com/wolfSSL/wolfssl/pull/10536

https://www.wolfssl.com/docs/security-vulnerabilities/

[{"vendor":"wolfSSL","product":"wolfSSL","defaultStatus":"unaffected","collectionURL":"https://github.com/wolfSSL/wolfssl","versions":[{"version":"5.6.4","lessThanOrEqual":"5.9.1","versionType":"semver","status":"affected"}]}]