7.5

CVE-2023-35391: microsoft asp.net_core

CVSS: 7.5v3.1HighModified
AliasesGHSA-j8rm-cm55-qqj6BIT-aspnet-core-2023-35391BIT-dotnet-2023-35391
Published 08-08-2023Last modified 10-08-2026
Open JSON

Vulnerability summary

CVE-2023-35391 is a high (CVSS 7.5) vulnerability in microsoft asp.net_core. EPSS estimates a 1.90% chance of exploitation in the next 30 days, higher than 79.4% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.90%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 08-08-2023
    PublishedVulnerability first disclosed.
  2. 10-08-2026
    Last modifiedVulnerability information updated.

Description

ASP.NET Core SignalR and Visual Studio Information Disclosure Vulnerability

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

1.90%

Chance of exploitation in the next 30 days

Percentile

79%

Versus all other CVEs

30-day change

0.00 pp

From 1.90% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.90%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Microsoft9 products
NuGet2 products
  • Microsoft.AspNetCore.SignalR.Redis< 1.0.40
  • Microsoft.AspNetCore.SignalR.StackExchangeRedis≥ 7.0.0, < 7.0.10 | ≥ 6.0.0, < 6.0.21

2 vendors · 11 products

References

5 links