{"id":"CVE-2026-29647","aliases":["EUVD-2026-23960","GHSA-8w4w-q822-g7ph"],"status":"published","title":"In OpenXiangShan NEMU, insufficient Smstateen permission enforcement allows lower-privileged code...","description":"In OpenXiangShan NEMU, insufficient Smstateen permission enforcement allows lower-privileged code to access IMSIC state via stopei/vstopei CSRs even when mstateen0.IMSIC is cleared, potentially enabling cross-context information leakage or disruption of interrupt handling.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00231,"percentile":0.14003,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2026-04-20T00:00:00Z","modified":"2026-06-17T10:29:50Z","references":[{"url":"https://github.com/OpenXiangShan/NEMU/issues/691","tags":["exploit"]},{"url":"https://github.com/OpenXiangShan/XiangShan/pull/3978"},{"url":"https://docs.riscv.org/reference/isa/priv/smstateen.html#state-enable-0-registers"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-29647"},{"url":"https://github.com/advisories/GHSA-8w4w-q822-g7ph"}],"sources":{"cve":[{"id":"CVE-2026-29647","description":"In OpenXiangShan NEMU, insufficient Smstateen permission enforcement allows lower-privileged code to access IMSIC state via stopei/vstopei CSRs even when mstateen0.IMSIC is cleared, potentially enabling cross-context information leakage or disruption of interrupt handling.","status":"published","published":"2026-04-20T00:00:00Z","modified":"2026-04-21T19:50:43.685Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:19:56.284359Z"}],"euvd":[{"id":"EUVD-2026-23960","description":"In OpenXiangShan NEMU, insufficient Smstateen permission enforcement allows lower-privileged code to access IMSIC state via stopei/vstopei CSRs even when mstateen0.IMSIC is cleared, potentially enabling cross-context information leakage or disruption of interrupt handling.","status":"published","published":"2026-04-20T00:00:00Z","modified":"2026-04-21T19:50:43Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T19:24:21.512647Z"}],"ghsa":[{"id":"GHSA-8w4w-q822-g7ph","title":"In OpenXiangShan NEMU, insufficient Smstateen permission enforcement allows lower-privileged code...","description":"In OpenXiangShan NEMU, insufficient Smstateen permission enforcement allows lower-privileged code to access IMSIC state via stopei/vstopei CSRs even when mstateen0.IMSIC is cleared, potentially enabling cross-context information leakage or disruption of interrupt handling.","status":"published","published":"2026-04-20T21:31:46Z","modified":"2026-04-21T21:31:22Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T15:07:33.597532Z"}],"nvd":[{"id":"CVE-2026-29647","description":"In OpenXiangShan NEMU, insufficient Smstateen permission enforcement allows lower-privileged code to access IMSIC state via stopei/vstopei CSRs even when mstateen0.IMSIC is cleared, potentially enabling cross-context information leakage or disruption of interrupt handling.","status":"published","published":"2026-04-20T21:16:19.637Z","modified":"2026-06-17T10:29:50.887Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:12:15.120927Z"}]}}