Go cmd/compile 1.25.9/1.26.2 Induction Variable Underflow Vulnerability
CVE-2026-27143 Published on April 8, 2026

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

NVD

Vulnerability Analysis

CVE-2026-27143 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Products Associated with CVE-2026-27143

Want to know whenever a new CVE is published for GoLang Go? stack.watch will email you.

GoLang Go
 

Affected Versions

Go toolchain cmd/compile:

Exploit Probability

EPSS
0.02%
Percentile
6.61%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.