8.8

CVE-2025-21176: .NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability

Modified
AliasesUBUNTU-CVE-2025-21176CGA-rpj4-7q4q-j3j9CGA-vf2r-qpw9-v287
Published 14-01-2025Last modified 09-06-2026

Vulnerability summary

CVE-2025-21176 is a high (CVSS 8.8) Buffer Over-read vulnerability in microsoft microsoft .net framework 3.5 and 4.6.2/4.7/4.7.1/4.7.2. EPSS estimates a 2.38% chance of exploitation in the next 30 days, higher than 83.9% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 8.8, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
2.38%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Related 2
RHBA-2025:0304RHBA-2025:0305RHSA-2025:0381RHSA-2025:0382RHSA-2025:0532USN-7210-1

Timeline

  1. 14-01-2025
    PublishedVulnerability first disclosed.
  2. 09-06-2026
    Last modifiedVulnerability information updated.

Description

.NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

2.38%

Chance of exploitation in the next 30 days

Percentile

84%

Versus all other CVEs

30-day change

Increase +0.03 pp

From 2.35% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Microsoft20 products
NuGet12 products
  • Microsoft.NETCore.App.Runtime.linux-arm≥ 9.0.0, < 9.0.1 | ≥ 8.0.0, < 8.0.12
  • Microsoft.NETCore.App.Runtime.linux-arm64≥ 9.0.0, < 9.0.1 | ≥ 8.0.0, < 8.0.12
  • Microsoft.NETCore.App.Runtime.linux-musl-arm≥ 9.0.0, < 9.0.1 | ≥ 8.0.0, < 8.0.12
  • Microsoft.NETCore.App.Runtime.linux-musl-arm64≥ 9.0.0, < 9.0.1 | ≥ 8.0.0, < 8.0.12
  • Microsoft.NETCore.App.Runtime.linux-musl-x64≥ 9.0.0, < 9.0.1 | ≥ 8.0.0, < 8.0.12
Ubuntu3 products
  • dotnet6All versions (No fix recorded)
  • dotnet7All versions (No fix recorded)
  • dotnet8< 8.0.112-8.0.12-0ubuntu1~22.04.1 | < 8.0.112-8.0.12-0ubuntu1~24.04.1
Alpine2 products
  • dotnet8-runtime< 8.0.12-r0
  • dotnet9-runtime< 9.0.1-r0
Chainguard1 product
  • dotnet-bootstrap-9< 9.0.200-r0
Wolfi1 product
  • dotnet-bootstrap-9< 9.0.200-r0

6 vendors · 39 products

References

10 links