CVE-2026-27143 | Arithmetic over induction variables in loops were not correc… | CVSS 9.8 CRITICAL

Description

Arithmetic over induction variables in loops were not correctly checked for underflow or overflow. As a result, the compiler would allow for invalid indexing to occur at runtime, potentially leading to memory corruption.

Metadata

CVE ID: CVE-2026-27143
State: PUBLISHED
Assigner: Go
Reserved: 2026-02-17 19:57 UTC
Published: 2026-04-08 01:06 UTC
Last updated: 2026-04-13 18:20 UTC
Vendor / Product: Go toolchain / cmd/compile
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
Go toolchain	cmd/compile	—	0 < 1.25.9, 1.26.0-0 < 1.26.2

Weakness (CWE)

CWE	Source	Description
—	cna	CWE-190: Integer Overflow or Wraparound

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	adp	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (4)