CVE-2015-8618: Golang Go

High severity, CVSS 7.5. EPSS: 2.6% chance of exploitation in the next 30 days.

The Int.Exp Montgomery code in the math/big library in Go 1.5.x before 1.5.3 mishandles carry propagation and produces incorrect output, which makes it easier for attackers to obtain private RSA keys via unspecified vectors.

Affected products

• Golang Go: version 1.5 only; version 1.5.1 only; version 1.5.2 only
• Opensuse Leap: version 42.1 only

Published 2016-01-27. Last modified 2026-06-17.