7.5

CVE-2023-21538: fedoraproject fedora Deserialization of Untrusted Data

CVSS: 7.5v3.1HighModified
AliasesRHSA-2023:0077RHSA-2023:0078RHSA-2023:0079
Published 10-01-2023Last modified 01-01-2025
Open JSON

Vulnerability summary

CVE-2023-21538 is a high (CVSS 7.5) Deserialization of Untrusted Data vulnerability in fedoraproject fedora. EPSS estimates a 2.76% chance of exploitation in the next 30 days, higher than 86% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
2.76%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 10-01-2023
    PublishedVulnerability first disclosed.
  2. 01-01-2025
    Last modifiedVulnerability information updated.

Description

.NET Denial of Service Vulnerability

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

2.76%

Chance of exploitation in the next 30 days

Percentile

86%

Versus all other CVEs

30-day change

+0.02 pp

From 2.74% on 19-09-2026

19-09-202619-10-2026
EPSS score
2.76%

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

Affected systems

Redhat29 products
  • aspnetcore-runtime-6.0< 0:6.0.13-1.el9_1 | < 0:6.0.13-1.el8_7
  • aspnetcore-targeting-pack-6.0< 0:6.0.13-1.el9_1 | < 0:6.0.13-1.el8_7
  • dotnet-apphost-pack-6.0< 0:6.0.13-1.el9_1 | < 0:6.0.13-1.el8_7
  • dotnet-apphost-pack-6.0-debuginfo< 0:6.0.13-1.el9_1 | < 0:6.0.13-1.el8_7
  • dotnet-hostfxr-6.0< 0:6.0.13-1.el9_1 | < 0:6.0.13-1.el8_7
NuGet12 products
  • Microsoft.NETCore.App.Runtime.linux-arm≥ 6.0.0, < 6.0.13
  • Microsoft.NETCore.App.Runtime.linux-arm64≥ 6.0.0, < 6.0.13
  • Microsoft.NETCore.App.Runtime.linux-musl-arm≥ 6.0.0, < 6.0.13
  • Microsoft.NETCore.App.Runtime.linux-musl-arm64≥ 6.0.0, < 6.0.13
  • Microsoft.NETCore.App.Runtime.linux-musl-x64≥ 6.0.0, < 6.0.13
Microsoft4 products
Fedoraproject1 product
Ubuntu1 product
  • dotnet6< 6.0.113-0ubuntu1~22.04.1

5 vendors · 47 products

References

21 links
Show all 21 references