CVE-2026-27143

Name: CVE-2026-27143
Creator: NVD / NIST
Published: 2026-04-08T02:16:03.017+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.54%

Last modified Jun 17, 2026

CVE-2026-27143 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 0.54% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

0.54%

41.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Golang	Go	< 1.25.9
Golang	Go	>= 1.26.0, < 1.26.2

References

https://go.dev/cl/763765Patch
https://go.dev/issue/78333Issue Tracking
https://groups.google.com/g/golang-announce/c/0uYbvbPZRWUMailing List, Release Notes
https://pkg.go.dev/vuln/GO-2026-4868Vendor Advisory

Timeline

Published: Apr 8, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-27143?

How severe is CVE-2026-27143?

CVE-2026-27143 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.54% probability of exploitation in the next 30 days.

How do I fix CVE-2026-27143?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-27143?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST