Microsoft · smb: client: fail DACL rewrite when the new DACL exceeds 64K
Affects MicrosoftSource GCVE Database
Not known to be exploited · fixed in f033d6e5aadf3e8c6a12873110557ed40cd71388 : update Microsoft when convenient.
Data as of 7 Nov 2026, 12:35 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Thin evidence
One scorer or none- Patch
- Available – fixed in f033d6e5aadf3e8c6a12873110557ed40cd71388, ee13d687d06a6fbb2008625dd560c654231b28e0, d05045177a855386bca5e1909e08d06290e6e3b3 +3
Exploitation evidence
Disclosed: evidence found.
CVE published 25 Sep 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 7 Nov 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
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Description
A vulnerability identified as CVE-2026-97559 affects Microsoft SMB client versions 3.0 and 4.0, involving a failure in Discretionary Access Control List (DACL) rewriting when the new DACL exceeds 64KB in size. The issue is published but lacks detailed technical or impact information and no CVSS score is assigned.