CVE-2026-27143

Missing bound checks can lead to memory corruption in safe Go in cmd/compile

Critical · published April 8, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
51.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00661 · 51.0th percentile
Published
2026-04-08T01:06Z
EPSS history
Timeline
  • 08 APR 01:06Z
    Missing bound checks can lead to memory corruption in safe Go in cmd/compile
    cvelistv5