Description
The CombinedMult function in the CIRCL ecc/p384 package (secp384r1 curve) produces an incorrect value for specific inputs. The issue is fixed by using complete addition formulas. ECDH and ECDSA signing relying on this curve are not affected. The bug was fixed in v1.6.3 https://github.com/cloudflare/circl/releases/tag/v1.6.3 .
References (1)
Scores
CVSS v3
9.8
EPSS
0.0002
EPSS Percentile
6.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-682
Status
published
Products (2)
cloudflare/circl
< 1.6.3
cloudflare/circl
0 - 1.6.3Go
Published
Feb 24, 2026
Tracked Since
Feb 24, 2026