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CVE-2026-29648

In OpenXiangShan NEMU, when Smstateen is enabled, clearing mstateen0.ENVCFG does not correctly restrict access to henvcfg and senvcfg. As a result, less-privileged code may read or write these CSRs without the required exception, potentially bypassing intended state-enable based isolation controls in virtualized or multi-privilege environments.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:31c272dafcf07757bf294dd87ca0c2ed63fb405c6e3e654eac4caf612723525a
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"description":"n/a","lang":"en","type":"text"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:86469ff3fed0eaf7880871411e088cc4679656d89f6e8b44f150e7f441832f0a · sha256:733c764d4847c53a… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-269","description":"CWE-269 Improper Privilege Management","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:86469ff3fed0eaf7880871411e088cc4679656d89f6e8b44f150e7f441832f0a · sha256:733c764d4847c53a… · /containers/adp/0/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:86469ff3fed0eaf7880871411e088cc4679656d89f6e8b44f150e7f441832f0a · sha256:733c764d4847c53a… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:86469ff3fed0eaf7880871411e088cc4679656d89f6e8b44f150e7f441832f0a · sha256:733c764d4847c53a… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"description":"n/a","lang":"en","type":"text"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:86469ff3fed0eaf7880871411e088cc4679656d89f6e8b44f150e7f441832f0a · sha256:733c764d4847c53a… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-269","description":"CWE-269 Improper Privilege Management","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:86469ff3fed0eaf7880871411e088cc4679656d89f6e8b44f150e7f441832f0a · sha256:733c764d4847c53a… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

4 source assertions
{"url":"https://docs.riscv.org/reference/isa/priv/smstateen.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:86469ff3fed0eaf7880871411e088cc4679656d89f6e8b44f150e7f441832f0a · sha256:733c764d4847c53a… · /containers/cna/references/2
{"tags":["exploit"],"url":"https://github.com/OpenXiangShan/NEMU/issues/690"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:86469ff3fed0eaf7880871411e088cc4679656d89f6e8b44f150e7f441832f0a · sha256:733c764d4847c53a… · /containers/adp/0/references/0
{"url":"https://github.com/OpenXiangShan/NEMU/issues/690"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:86469ff3fed0eaf7880871411e088cc4679656d89f6e8b44f150e7f441832f0a · sha256:733c764d4847c53a… · /containers/cna/references/0
{"url":"https://github.com/OpenXiangShan/XiangShan/pull/3978"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:86469ff3fed0eaf7880871411e088cc4679656d89f6e8b44f150e7f441832f0a · sha256:733c764d4847c53a… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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