---
cve: "CVE-2026-27143"
severity: "CRITICAL"
cvss: 9.8
epss: "54%"
vendor: "Go toolchain"
kev: false
exploited: false
published: "2026-04-08 02:16:03"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-03T22:36:10+02:00"
---

# CVE-2026-27143

> 9.8 CRITICAL

## Beschreibung

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.

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- 7076e01d9d450bae9f25be76f45d58cc52e2aad2 (Commit)
- 9c8bf0e72a6fb3b415b591b124b59fbb7cf92252 (Commit)

## Referenzen

- <https://go.dev/cl/763765>
- <https://go.dev/issue/78333>
- <https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU>
- <https://pkg.go.dev/vuln/GO-2026-4868>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-27143) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_