Description
RustCrypto: Elliptic Curves is general purpose Elliptic Curve Cryptography (ECC) support, including types and traits for representing various elliptic curve forms, scalars, points, and public/secret keys composed thereof. In versions 0.14.0-pre.0 and 0.14.0-rc.0, a critical vulnerability exists in the SM2 Public Key Encryption (PKE) implementation where the ephemeral nonce k is generated with severely reduced entropy. A unit mismatch error causes the nonce generation function to request only 32 bits of randomness instead of the expected 256 bits. This reduces the security of the encryption from a 128-bit level to a trivial 16-bit level, allowing a practical attack to recover the nonce k and decrypt any ciphertext given only the public key and ciphertext. This issue has been patched via commit e4f7778.
INFO
Published Date :
2026-01-10T05:17:19.993Z
Last Modified :
2026-01-12T16:48:30.706Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2026-22698 vulnerability.
| Vendors | Products |
|---|---|
| Rustcrypto |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-22698.
