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CVE-2019-1302

30
FAUCET Score

CVE-2019-1302 is an elevation of privilege vulnerability affecting ASP.NET Core web applications created with vulnerable project templates, stemming from improper sanitization of web requests. With a CVSS score of 8.8 (High), it can be exploited remotely with low attack complexity, potentially leading to high impact on confidentiality, integrity, and availability. While no public exploit code (Metasploit, Nuclei, ExploitDB) is available and it's not listed in CISA's KEV catalog, its high FAUCET Risk Score and mention in community discussions and media coverage indicate its significance.

Impacted Technologies

VendorProductVersion(s)CPE
2.1CPE matchmatch criteria
cpe:2.3:a:microsoft:asp.net_core:2.1:*:*:*:*:*:*:*
2.2CPE matchmatch criteria
cpe:2.3:a:microsoft:asp.net_core:2.2:*:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:a:microsoft:asp.net_core:3.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.85%
Probability of exploitation in next 30 days
EPSS Percentile
91.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0485 is in the 91st percentile among its peer group of 14,848 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: ASP.NET Core 2.2
View patch
microsoftpatch availablevia msrc
Product: ASP.NET Core 2.1
View patch
microsoftpatch availablevia msrc
Product: ASP.NET Core 3.0
View patch
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.SpaServicesFixed in: 2.2.7
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.SpaServicesFixed in: 2.1.13

Vendor Advisories (2)

nugetGHSA-xr8f-59pp-rxxhmedium

Elevation of privilege in ASP.NET Core

May 24, 2022
microsoft2019-Sep/CVE-2019-1302Important

ASP.NET Core Elevation Of Privilege Vulnerability

Sep 10, 2019

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2019-1302
PatchVendor Advisory