CVE-2026-27143: critical vulnerability in Go toolchain cmd/compile
Missing bound checks can lead to memory corruption in safe Go in cmd/compile
Published · Updated
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.8epss 0.5%
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Go toolchain · cmd/compileRelated CVEs — Go toolchain cmd/compile
In the same product, most dangerous first.