How severe is CVE-2019-1253?

CVE-2019-1253 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-1253 being actively exploited?

Yes. CVE-2019-1253 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-03-15, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2019-1253?

CVE-2019-1253 primarily affects Microsoft Windows 10 1703. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-1253?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2019-1253 have an EU (EUVD) identifier?

Yes. CVE-2019-1253 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2019-9819. It is also flagged as exploited in the EUVD (since 2022-03-15).

When was CVE-2019-1253 published?

CVE-2019-1253 was published on 2019-09-11 and last updated on 2026-06-17.

CVE-2019-1253

CVE-2019-1253 is a high-severity vulnerability in Microsoft Windows 10 1703 with a CVSS 3.x base score of 7.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-03-15). The underlying weakness is classified as CWE-59.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 12% (96th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-03-15)
EU (EUVD) id: EUVD-2019-9819
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-03-15)
Weakness: CWE-59
Affected product: Microsoft Windows 10 1703
Published: 2019-09-11
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2019-1253?: 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.
How severe is CVE-2019-1253?: CVE-2019-1253 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-1253 being actively exploited?: Yes. CVE-2019-1253 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-03-15, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2019-1253?: CVE-2019-1253 primarily affects Microsoft Windows 10 1703. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-1253?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2019-1253 have an EU (EUVD) identifier?: Yes. CVE-2019-1253 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2019-9819. It is also flagged as exploited in the EUVD (since 2022-03-15).
When was CVE-2019-1253 published?: CVE-2019-1253 was published on 2019-09-11 and last updated on 2026-06-17.

References

Affected products (17)

cpe:2.3:o:microsoft:windows_10_1703:-:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_1703:-:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_server_1803:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_1903:-:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*

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