CVE-2024-44067Public exploit

Root access via physical-address vector stores

Published Aug 19, 2024 · Updated Aug 20, 2024

Write-what-where in Alibaba Group T-Head XuanTie C910 and C920 RISC-V CPUs allows local users to gain root access. Illegally encoded vector-store instructions treat an operand as a physical rather than virtual address, bypassing process isolation. Any unprivileged code running on affected silicon, including code inside containers or virtual machines, can overwrite kernel memory or MMIO devices.

CVSS severity8.4
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Write-what-where in Alibaba Group T-Head XuanTie C910 and C920 RISC-V CPUs allows local users to gain root access. Illegally encoded vector-store instructions treat an operand as a physical rather than virtual address, bypassing process isolation. Any unprivileged code running on affected silicon, including code inside containers or virtual machines, can overwrite kernel memory or MMIO devices.

The record

CVE
CVE-2024-44067
Published
Aug 19, 2024
Updated
Aug 20, 2024
Vendor
Alibaba Group
Product
T-Head XuanTie C910
Classifications
CWE-119, CWE-123, T1068
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=0 <*

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Alibaba Group · T-Head XuanTie C910version=0 <*
Alibaba Group · T-Head XuanTie C920version=0 <*

Published CVSS scores

8.4CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-123Write-what-where Condition
T1068Exploitation for Privilege Escalation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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