Microsoft · riscv: kvm: fix vector context allocation leak
Affects MicrosoftSource GCVE Database
Not known to be exploited · fixed in bd62c0f61bc722a097417401030c596cea8e21aa : update Microsoft when convenient.
Data as of 30 Oct 2026, 06:59 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in bd62c0f61bc722a097417401030c596cea8e21aa, b7c958d7c1eb1cb9b2be7b5ee4129fcd66cec978, 70ecebe7c58ce01f8da3f513eafb51bd147b1e63 +2
Exploitation evidence
Disclosed: evidence found.
CVE published 28 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in– |
Description
CVE-2026-46171 is a vulnerability in Microsoft software related to the RISC-V KVM (Kernel-based Virtual Machine) component, specifically addressing a vector context allocation leak. The affected version is 3.0. No CVSS score is provided, and there are no known exploits in the wild.