NULL pointer dereference in Microsoft Windows 10
CVE-2022-32230
Microsoft Windows SMBv3 suffers from a null pointer dereference in versions of Windows prior to the April, 2022 patch set. By sending a malformed FileNormalizedNameInformation SMBv3 request over a named pipe, an attacker can cause a Blue Screen of Death (BSOD) crash of the Windows kernel. For most systems, this attack requires authentication, except in the special case of Windows Domain Controllers, where unauthenticated users can always open named pipes as long as they can establish an SMB session. Typically, after the BSOD, the victim SMBv3 server will reboot.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.075 (94.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.075 · newest: 0.075 · change: 0.000
Affected products
- Microsoft Windows 10 — versions 20h2, 21h1, 21h2
- Microsoft Windows 10 Version 20h2 — versions 19042.1706, 19043.1706, 19044.1706
- Microsoft Windows 10 Version 21h1 — versions 19042.1706, 19043.1706, 19044.1706
- Microsoft Windows 10 Version 21h2 — versions 19042.1706, 19043.1706, 19044.1706
- Microsoft Windows 11
- Microsoft Windows Server 2019
- Microsoft Windows Server Version 20h2 — versions 19042.1706, 19043.1706, 19044.1706
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.rapid7.com/blog/post/2022/06/14/cve-2022-32230-windows-smb-denial-of-servic… (Exploit, Third Party Advisory)
- msrc.microsoft.com/update-guide/vulnerability/CVE-2022-32230 (Patch, Vendor Advisory)
- github.com/zeroSteiner/metasploit-framework/blob/feat/mod/cve-2022-32230/module… (Exploit, Third Party Advisory)
- support.microsoft.com/en-us/topic/may-10-2022-kb5013942-os-builds-19042-1706-19… (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-32230?
- CVE-2022-32230 is a high-severity vulnerability in Microsoft Windows 10, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2022-06-14.
- How severe is CVE-2022-32230?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2022-32230 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.