Access Control Bypass The advisory has been revoked - it doesn't affect any version of package OpenXiangShan/NEMU  (opens in a new tab)


Threat Intelligence

EPSS
0.23% (14th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Access Control Bypass vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-UNMANAGED-OPENXIANGSHANNEMU-16300056
  • published26 Apr 2026
  • disclosed20 Apr 2026
  • creditUnknown

Introduced: 20 Apr 2026

CVE-2026-29647  (opens in a new tab)
CWE-284  (opens in a new tab)

Amendment

This was deemed not a vulnerability.

Overview

Affected versions of this package are vulnerable to Access Control Bypass due to insufficient permission checks in the stopei and vstopei control and status registers (CSRs). An attacker can gain unauthorized access to IMSIC state or disrupt interrupt handling by executing privileged instructions from a lower-privileged context when the mstateen0.IMSIC bit is cleared.