HIGH 8.4 Microsoft
CVE-2026-0031
In multiple functions of mem_protect.c, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
Microsoft Security Update 2026-Aug: In multiple functions of mem_protect.c, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
Affected Products
- cbl2 hyperv-daemons 5.15.200.1-1 on CBL Mariner 2.0
- azl3 hyperv-daemons 6.6.126.1-1 on Azure Linux 3.0
- cbl2 hyperv-daemons 5.15.200.1-1
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-0031
- https://nvd.nist.gov/vuln/detail/CVE-2026-0031
This high severity vulnerability with a CVSS score of 8.4 was published on 2026-08-06 via Microsoft. Affected: cbl2 hyperv-daemons 5.15.200.1-1 on CBL Mariner 2.0, azl3 hyperv-daemons 6.6.126.1-1 on Azure Linux 3.0, cbl2 hyperv-daemons 5.15.200.1-1.
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