CVE-2019-0703 (GCVE-0-2019-0703)
Vulnerability from cvelistv5 – Published: 2019-04-08 23:41 – Updated: 2025-10-21 23:45Summary
An information disclosure vulnerability exists in the way that the Windows SMB Server handles certain requests, aka 'Windows SMB Information Disclosure Vulnerability'. This CVE ID is unique from CVE-2019-0704, CVE-2019-0821.
Severity
6.5 (Medium)
SSVC
Exploitation: active
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-07 16:19 UTC
CWE
- Information Disclosure
- CWE-noinfo Not enough information
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://portal.msrc.microsoft.com/en-US/security-… | x_refsource_CONFIRM |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Microsoft | Windows |
Affected:
7 for 32-bit Systems Service Pack 1
Affected: 7 for x64-based Systems Service Pack 1 Affected: 8.1 for 32-bit systems Affected: 8.1 for x64-based systems Affected: RT 8.1 Affected: 10 for 32-bit Systems Affected: 10 for x64-based Systems Affected: 10 Version 1607 for 32-bit Systems Affected: 10 Version 1607 for x64-based Systems Affected: 10 Version 1703 for 32-bit Systems Affected: 10 Version 1703 for x64-based Systems Affected: 10 Version 1709 for 32-bit Systems Affected: 10 Version 1709 for x64-based Systems Affected: 10 Version 1803 for 32-bit Systems Affected: 10 Version 1803 for x64-based Systems Affected: 10 Version 1803 for ARM64-based Systems Affected: 10 Version 1809 for 32-bit Systems Affected: 10 Version 1709 for ARM64-based Systems |
guessed | |
| Microsoft | Windows Server |
Affected:
2008 R2 for x64-based Systems Service Pack 1 (Core installation)
Affected: n/a |
guessed |
Date Public
2019-03-12 00:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 27da08c6-38c2-45b8-9186-c1122671d968
Exploited: Yes
Timestamps
First Seen: 2022-05-23
Asserted: 2022-05-23
Scope
Notes: KEV entry: Microsoft Windows SMB Information Disclosure Vulnerability | Affected: Microsoft / Windows | Description: An information disclosure vulnerability exists in the way that the Windows SMB Server handles certain requests, which could lead to information disclosure from the server. | Required action: Apply updates per vendor instructions. | Due date: 2022-06-13 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2019-0703
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Windows |
| Due Date | 2022-06-13 |
| Date Added | 2022-05-23 |
| Vendorproject | Microsoft |
| Vulnerabilityname | Microsoft Windows SMB Information Disclosure Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-02-02 12:27 UTC
| Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: ed74717f-173f-407b-8d08-a70f013187ad
Exploited: Yes
Timestamps
First Seen: 2022-05-23
Asserted: 2022-05-23
Scope
Notes: KEVIntel entry: An information disclosure vulnerability exists in the way that the Windows SMB Server handles certain requests, aka 'Windows SMB Information... | Affected: Microsoft / Windows, Windows Server | CVSS: 6.5 (MEDIUM) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | An information disclosure vulnerability exists in the way that the Windows SMB Server handles certain requests, aka 'Windows SMB Information... |
| Vendor | Microsoft |
| Product | Windows, Windows Server |
| Added Date | 2022-05-23T00:00:00.000Z |
| Cvss Score | 6.5 |
| Epss Score | None |
| Cvss Severity | MEDIUM |
| Epss Percentile | None |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-23 14:05 UTC
| Updated: 2026-07-10 06:14 UTC
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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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