CVE-2026-29643

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.16% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 6.1% of scored records. A rank, not a probability.

NVD base score

7.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

NVD analysis status

Deferred. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-04-20 00:00Z4 MO AGO

Last updated

2026-04-21 19:50Z4 MO AGO

Reserved

2026-03-04

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Weaknesses

• CWE-703Improper Check or Handling of Exceptional ConditionsPillar

Data version

5.2

Document digest

6cee32a6732c4a1f5415e6740bbb5aab14f5b82831d10a950d6c191081116193

• github.comhttps://github.com/OpenXiangShan/XiangShan/issues/3959
• github.comhttps://github.com/OpenXiangShan/XiangShan/pull/3966
• docs.riscv.orghttps://docs.riscv.org/reference/isa/priv/priv-csrs.html
• docs.riscv.orghttps://docs.riscv.org/reference/isa/priv/machine.html