2021-33788 | Microsoft Windows LSA denial of service
|CVSS Meta Temp Score
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|Current Exploit Price (≈)
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|CTI Interest Score
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A vulnerability was found in Microsoft Windows (Operating System) and classified as critical. This issue affects an unknown code block of the component LSA. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. Impacted is availability. The summary by CVE is:
Windows LSA Denial of Service Vulnerability
The weakness was disclosed 07/13/2021 as confirmed security guidance (Website). It is possible to read the advisory at portal.msrc.microsoft.com. The identification of this vulnerability is CVE-2021-33788 since 05/28/2021. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 07/17/2021). The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.
Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.
VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.5
VulDB Base Score: 7.5
VulDB Temp Score: 6.5
VulDB Vector: 🔒
VulDB Reliability: 🔍
Vendor Base Score (Microsoft): 7.5
Vendor Vector (Microsoft): 🔒
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Class: Denial of service
Price Prediction: 🔍
Current Price Estimation: 🔒
Active Actors: 🔍
Active APT Groups: 🔍Recommended: Patch
Reaction Time: 🔒
0-Day Time: 🔒
Exposure Time: 🔒
05/28/2021 CVE assigned
07/13/2021 +46 days Advisory disclosed
07/13/2021 +0 days Countermeasure disclosed
07/14/2021 +0 days VulDB entry created
07/17/2021 +3 days VulDB last updateVendor: https://www.microsoft.com/
CVE: CVE-2021-33788 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20161215
Created: 07/14/2021 08:26
Updated: 07/17/2021 10:58
Changes: (2) source_cve_assigned source_cve_nvd_summary
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