How severe is CVE-2026-29647?

CVE-2026-29647 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-29647 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-29647?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-29647 have an EU (EUVD) identifier?

Yes. CVE-2026-29647 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23960.

When was CVE-2026-29647 published?

CVE-2026-29647 was published on 2026-04-20 and last updated on 2026-06-17.

CVE-2026-29647

CVE-2026-29647 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-269.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-23960
Weakness: CWE-269
Published: 2026-04-20
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-29647?: 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.
How severe is CVE-2026-29647?: CVE-2026-29647 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-29647 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-29647?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-29647 have an EU (EUVD) identifier?: Yes. CVE-2026-29647 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23960.
When was CVE-2026-29647 published?: CVE-2026-29647 was published on 2026-04-20 and last updated on 2026-06-17.

References

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