CVE-2026-69522 (GCVE-0-2026-69522)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:10 – Updated: 2026-09-18 20:37
VLAI
EPSS
VEX
Title
.NET and Visual Studio Remote Code Execution Vulnerability
Summary
Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 00:00 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
13 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Microsoft | .NET 10.0 |
Affected:
10.0.0 , < 10.0.12
(custom)
|
guessed | |
| Microsoft | .NET 11.0 |
Affected:
11.0.0 , < 11.0 RC1
(custom)
|
guessed | |
| Microsoft | .NET 8.0 |
Affected:
8.0.0 , < 8.0.31
(custom)
|
guessed | |
| Microsoft | .NET 9.0 |
Affected:
9.0.0 , < 9.0.20
(custom)
|
guessed | |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 |
Affected:
3.0.0.0 , < 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4145.0
(custom)
|
guessed | |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 |
Affected:
4.7.0 , < 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4145.0
(custom)
|
guessed | |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 |
Affected:
4.8.0 , < 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4806.0
(custom)
|
guessed | |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 |
Affected:
4.8.1 , < 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9347.0
(custom)
|
guessed | |
| Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 |
Affected:
4.7.0 , < 4.7.4145.0
(custom)
|
guessed | |
| Microsoft | Microsoft .NET Framework 4.8 |
Affected:
4.8.0 , < 4.8.4806.0
(custom)
|
guessed | |
| Microsoft | Microsoft .NET Framework 4.8.1 |
Affected:
4.8.0.0 , < 4.8.9347.0
(custom)
|
guessed | |
| Microsoft | Microsoft Visual Studio 2022 version 17.14 |
Affected:
17.14.0 , < 17.14.40
(custom)
|
guessed | |
| Microsoft | Microsoft Visual Studio 2026 version 18.9 |
Affected:
18.9.0 , < 18.9.3
(custom)
|
guessed |
Date Public
2026-09-08 14:00
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},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-08T19:00:03.828Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
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"title": "CISA ADP Vulnrichment"
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{
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{
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{
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"Windows 10 Version 22H2 for 32-bit Systems",
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"Windows Server 2019",
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"product": "Microsoft .NET Framework 3.5 AND 4.8",
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"versions": [
{
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{
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"Windows 10 Version 22H2 for x64-based Systems",
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"Windows 11 Version 25H2 for ARM64-based Systems",
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"Windows Server 2022",
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"product": "Microsoft .NET Framework 3.5 AND 4.8.1",
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},
{
"platforms": [
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},
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},
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},
{
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],
"cpeApplicability": [
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"nodes": [
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{
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}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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