CVE-2021-1723 (GCVE-0-2021-1723)
Vulnerability from cvelistv5 – Published: 2021-01-12 19:42 – Updated: 2026-05-28 18:48
VLAI
EPSS
VEX
Title
ASP.NET Core and Visual Studio Denial of Service Vulnerability
Summary
ASP.NET Core and Visual Studio Denial of Service Vulnerability
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-04 18:52 UTC
CWE
- Denial of Service
- CWE-noinfo Not enough information
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisory |
| https://portal.msrc.microsoft.com/en-US/security-… | x_refsource_MISCx_transferred |
Impacted products
5 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Microsoft | ASP.NET Core 3.1 |
Affected:
3.0 , < publication
(custom)
cpe:2.3:a:microsoft:asp.net_core:3.1:*:*:*:*:*:*:* |
||
| Microsoft | ASP.NET Core 5.0 |
Affected:
5.0 , < publication
(custom)
cpe:2.3:a:microsoft:asp.net_core:5.0:*:*:*:*:*:*:* |
||
| Microsoft | Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3) |
Affected:
16.0 , < publication
(custom)
cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:* |
||
| Microsoft | Microsoft Visual Studio 2019 version 16.8 |
Affected:
16.0 , < publication
(custom)
cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:* |
||
| Microsoft | Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6) |
Affected:
16.0.0 , < publication
(custom)
cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:* |
Date Public
2021-01-12 08:00
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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- Confirmed: The vulnerability has been validated from an analyst's perspective.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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