CVE-2026-27143: CWE-190: Integer Overflow or Wraparound in Go toolchain 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.
AI Analysis
Technical Summary
An integer overflow or wraparound occurs in the Go toolchain's cmd/compile due to insufficient validation of arithmetic over induction variables in loops. This allows the compiler to produce code that may perform invalid memory indexing during execution, potentially leading to memory corruption. The vulnerability affects Go versions up to 1.26.0-0 and is tracked as CVE-2026-27143 with a critical severity rating and a CVSS score of 9.8. No vendor advisory or patch information is currently available, and no exploits are known in the wild.
Potential Impact
Successful exploitation could result in memory corruption at runtime, which may lead to arbitrary code execution, application crashes, or other severe impacts on confidentiality, integrity, and availability of applications compiled with the affected Go versions. Given the critical CVSS score, the impact is considered severe.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider avoiding use of affected Go versions for compiling sensitive or critical applications. Monitoring the official Go project advisories for updates is recommended.
CVE-2026-27143: CWE-190: Integer Overflow or Wraparound in Go toolchain cmd/compile
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
An integer overflow or wraparound occurs in the Go toolchain's cmd/compile due to insufficient validation of arithmetic over induction variables in loops. This allows the compiler to produce code that may perform invalid memory indexing during execution, potentially leading to memory corruption. The vulnerability affects Go versions up to 1.26.0-0 and is tracked as CVE-2026-27143 with a critical severity rating and a CVSS score of 9.8. No vendor advisory or patch information is currently available, and no exploits are known in the wild.
Potential Impact
Successful exploitation could result in memory corruption at runtime, which may lead to arbitrary code execution, application crashes, or other severe impacts on confidentiality, integrity, and availability of applications compiled with the affected Go versions. Given the critical CVSS score, the impact is considered severe.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider avoiding use of affected Go versions for compiling sensitive or critical applications. Monitoring the official Go project advisories for updates is recommended.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Go
- Date Reserved
- 2026-02-17T19:57:28.435Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d5da2d43e2781badfbe671
Added to database: 4/8/2026, 4:31:41 AM
Last enriched: 4/15/2026, 11:51:04 AM
Last updated: 5/23/2026, 6:54:47 PM
Views: 70
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