CVE-2019-1253 (GCVE-0-2019-1253)
Vulnerability from cvelistv5 – Published: 2019-09-11 21:24 – Updated: 2025-10-21 23:45Summary
An elevation of privilege vulnerability exists when the Windows AppX Deployment Server improperly handles junctions.To exploit this vulnerability, an attacker would first have to gain execution on the victim system, aka 'Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-1215, CVE-2019-1278, CVE-2019-1303.
Severity
7.8 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-07 16:08 UTC
CWE
- Elevation of Privilege
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://portal.msrc.microsoft.com/en-US/security-… | x_refsource_MISC |
| http://packetstormsecurity.com/files/154488/AppXS… | x_refsource_MISC |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
6 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Microsoft | Windows |
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 1809 for x64-based Systems Affected: 10 Version 1809 for ARM64-based Systems Affected: 10 Version 1709 for ARM64-based Systems |
guessed | |
| Microsoft | Windows Server |
Affected:
version 1803 (Core Installation)
Affected: 2019 Affected: 2019 (Core installation) |
guessed | |
| Microsoft | Windows 10 Version 1903 for 32-bit Systems |
Affected:
unspecified
|
guessed | |
| Microsoft | Windows 10 Version 1903 for x64-based Systems |
Affected:
unspecified
|
guessed | |
| Microsoft | Windows 10 Version 1903 for ARM64-based Systems |
Affected:
unspecified
|
guessed | |
| Microsoft | Windows Server, version 1903 (Server Core installation) |
Affected:
unspecified
|
guessed |
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 0244a0b7-7eee-41b9-a8a5-a4a0c70e0e55
Exploited: Yes
Timestamps
First Seen: 2022-03-15
Asserted: 2022-03-15
Scope
Notes: KEV entry: Microsoft Windows AppX Deployment Server Privilege Escalation Vulnerability | Affected: Microsoft / Windows | Description: A privilege escalation vulnerability exists when the Windows AppX Deployment Server improperly handles junctions. | Required action: Apply updates per vendor instructions. | Due date: 2022-04-05 | Known ransomware campaign use (KEV): Known | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2019-1253
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-59 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Windows |
| Due Date | 2022-04-05 |
| Date Added | 2022-03-15 |
| Vendorproject | Microsoft |
| Vulnerabilityname | Microsoft Windows AppX Deployment Server Privilege Escalation Vulnerability |
| Knownransomwarecampaignuse | Known |
References
Created: 2026-02-02 12:28 UTC
| Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: a7b77af0-8a20-46e6-a1b4-2fdb63f0d20e
Exploited: Yes
Timestamps
First Seen: 2022-03-15
Asserted: 2022-03-15
Scope
Notes: KEVIntel entry: An elevation of privilege vulnerability exists when the Windows AppX Deployment Server improperly handles junctions.To exploit this vulnerability,... | Affected: Microsoft / Windows, Windows Server, Windows 10 Version 1903 for 32-bit Systems, Windows 10 Version 1903 for x64-based Systems, Windows 10 Version 1903 for ARM64-based Systems, Windows Server, version 1903 (Server Core installation) | CVSS: 7.8 (HIGH) | Used in malware: yes | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Confirmed Compromise
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | An elevation of privilege vulnerability exists when the Windows AppX Deployment Server improperly handles junctions.To exploit this vulnerability,... |
| Vendor | Microsoft |
| Product | Windows, Windows Server, Windows 10 Version 1903 for 32-bit Systems, Windows 10 Version 1903 for x64-based Systems, Windows 10 Version 1903 for ARM64-based Systems, Windows Server, version 1903 (Server Core installation) |
| Added Date | 2022-03-15T00:00:00.000Z |
| Cvss Score | 7.8 |
| Epss Score | None |
| Cvss Severity | HIGH |
| Epss Percentile | None |
| Used In Malware | yes |
| 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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