Microsoft · riscv: ptrace: Zero-initialize regset buffers before copyin
Affects MicrosoftSource GCVE Database
Not known to be exploited · fixed in 59052a88ba5fe4a7bb34b3a0a42aa5d453d3bb97 : update Microsoft when convenient.
Data as of 28 Oct 2026, 08:45 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- Patch
- Available – fixed in 59052a88ba5fe4a7bb34b3a0a42aa5d453d3bb97, 89fc70d73f4ac8781f9e15edd1dbc6b6088453b3, 6.6
Exploitation evidence
Disclosed: evidence found.
CVE published 23 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 2026.
What to do
Upgrade Linux to 59052a88ba5fe4a7bb34b3a0a42aa5d453d3bb97, 89fc70d73f4ac8781f9e15edd1dbc6b6088453b3 or 6.6.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
Description
A vulnerability identified as CVE-2026-98951 affects Microsoft products version 3.0 and 4.0. It involves the riscv ptrace functionality where regset buffers are not zero-initialized before copyin. No detailed impact or exploitation information is provided.