CyberSecBulletin
CVE-2023-36025Exploited in the wildNVD status: Analyzed

Microsoft Windows SmartScreen Security Feature Bypass

Published Updated By the CyberSecBulletin desk

CVE-2023-36025 is a high-severity vulnerability in Windows 10 Version 1809 from Microsoft, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. The record lists version 10.0.17763.5122 as the first without the flaw, so updating Windows 10 Version 1809 to that release or later removes the exposure. CISA added it to the Known Exploited Vulnerabilities catalogue on November 14, 2023, which means attacks have been observed in the wild.

Patch now

Attackers are already exploiting this vulnerability, according to CISA.

What to do

  1. Update Windows 10 Version 1809 to 10.0.17763.5122 or a later version.
  2. Update Windows Server 2019 to 10.0.17763.5122 or a later version.
  3. Update Windows Server 2019 (Server Core installation) to 10.0.17763.5122 or a later version.
  4. CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
  5. Read the advisory on msrc.microsoft.com for workarounds and exact fixed builds.
  6. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
  7. Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.

Affected products and versions

VendorProductAffected versionsFixed in
MicrosoftWindows 10 Version 180910.0.17763.0 up to, but not including, 10.0.17763.5122; 10.0.0 up to, but not including, 10.0.17763.512210.0.17763.5122
MicrosoftWindows Server 201910.0.17763.0 up to, but not including, 10.0.17763.512210.0.17763.5122
MicrosoftWindows Server 2019 (Server Core installation)10.0.17763.0 up to, but not including, 10.0.17763.512210.0.17763.5122
MicrosoftWindows Server 202210.0.20348.0 up to, but not including, 10.0.20348.211310.0.20348.2113
MicrosoftWindows 11 version 21H210.0.0 up to, but not including, 10.0.22000.260010.0.22000.2600
MicrosoftWindows 10 Version 21H210.0.19043.0 up to, but not including, 10.0.19043.369310.0.19043.3693
MicrosoftWindows 11 version 22H210.0.22621.0 up to, but not including, 10.0.22621.271510.0.22621.2715
MicrosoftWindows 10 Version 22H210.0.19045.0 up to, but not including, 10.0.19045.369310.0.19045.3693
MicrosoftWindows 11 version 22H310.0.22631.0 up to, but not including, 10.0.22631.271510.0.22631.2715
MicrosoftWindows 11 Version 23H210.0.22631.0 up to, but not including, 10.0.22631.271510.0.22631.2715
MicrosoftWindows Server 2022, 23H2 Edition (Server Core installation)10.0.25398.0 up to, but not including, 10.0.25398.53110.0.25398.531
MicrosoftWindows 10 Version 150710.0.10240.0 up to, but not including, 10.0.10240.2030810.0.10240.20308
MicrosoftWindows 10 Version 160710.0.14393.0 up to, but not including, 10.0.14393.645210.0.14393.6452
MicrosoftWindows Server 201610.0.14393.0 up to, but not including, 10.0.14393.645210.0.14393.6452
MicrosoftWindows Server 2016 (Server Core installation)10.0.14393.0 up to, but not including, 10.0.14393.645210.0.14393.6452
MicrosoftWindows Server 2008 Service Pack 26.0.6003.0 up to, but not including, 6.0.6003.223676.0.6003.22367
MicrosoftWindows Server 2008 Service Pack 2 (Server Core installation)6.0.6003.0 up to, but not including, 6.0.6003.223676.0.6003.22367
MicrosoftWindows Server 2008 R2 Service Pack 16.1.7601.0 up to, but not including, 6.1.7601.268166.1.7601.26816
MicrosoftWindows Server 2008 R2 Service Pack 1 (Server Core installation)6.1.7601.0 up to, but not including, 6.1.7601.268166.1.7601.26816
MicrosoftWindows Server 20126.2.9200.0 up to, but not including, 6.2.9200.245696.2.9200.24569
MicrosoftWindows Server 2012 (Server Core installation)6.2.9200.0 up to, but not including, 6.2.9200.245696.2.9200.24569
MicrosoftWindows Server 2012 R26.3.9600.0 up to, but not including, 6.3.9600.216686.3.9600.21668
MicrosoftWindows Server 2012 R2 (Server Core installation)6.3.9600.0 up to, but not including, 6.3.9600.216686.3.9600.21668
MicrosoftWindows 10 1507Not specified in the recordNot stated
MicrosoftWindows 10 1607Not specified in the recordNot stated

Version data comes from the organisation that assigned the CVE; 7 further products are omitted here. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
RequiredA user must take an action such as opening a file or link.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.18.8HighCNA (microsoft.com)
CVSS 3.18.8HighNVD

Official description

Windows SmartScreen Security Feature Bypass Vulnerability

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

Timeline

  1. CVE record published.
  2. Added to CISA's Known Exploited Vulnerabilities catalogue.
  3. Deadline for US federal agencies to remediate, set by CISA.
  4. CISA published its SSVC assessment (exploitation: active, automatable: no, technical impact: total).
  5. Record last changed materially (score, affected products, status or references).

References

Third-party and government advisories

Spotted an error? Tell us.