8

CVE-2025-26646: microsoft build_tools External Control of File Name or Path

CVSS: 8.0v3.1HighAnalyzed
AliasesRHSA-2025:7571RHSA-2025:7589RHSA-2025:7598
Published 13-05-2025Last modified 26-02-2026
Open JSON

Vulnerability summary

CVE-2025-26646 is a high (CVSS 8.0) External Control of File Name or Path vulnerability in microsoft build_tools. EPSS estimates a 1.27% chance of exploitation in the next 30 days, higher than 69.3% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.0/10
010
High · v3.1 (CVE.org)
EPSS score
1.27%
0%100%
Low · +0.07 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
RHSA-2026:9080RHSA-2026:9205CGA-74X8-73VW-G4MG

Timeline

  1. 13-05-2025
    PublishedVulnerability first disclosed.
  2. 26-02-2026
    Last modifiedVulnerability information updated.

Description

External control of file name or path in .NET, Visual Studio, and Build Tools for Visual Studio allows an authorized attacker to perform spoofing over a network.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

1.27%

Chance of exploitation in the next 30 days

Percentile

69%

Versus all other CVEs

30-day change

+0.07 pp

From 1.20% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.27%

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

Redhat44 products
  • aspnetcore-runtime-8.0< 0:8.0.16-1.el8_10 | < 0:8.0.16-1.el9_6 | < 0:8.0.16-1.el10_0 | < 0:8.0.16-1.el9_4
  • aspnetcore-runtime-9.0< 0:9.0.5-1.el8_10 | < 0:9.0.5-1.el9_6 | < 0:9.0.5-1.el10_0
  • aspnetcore-runtime-dbg-8.0< 0:8.0.16-1.el8_10 | < 0:8.0.16-1.el9_6 | < 0:8.0.16-1.el10_0 | < 0:8.0.16-1.el9_4
  • aspnetcore-runtime-dbg-9.0< 0:9.0.5-1.el8_10 | < 0:9.0.5-1.el9_6 | < 0:9.0.5-1.el10_0
  • aspnetcore-targeting-pack-8.0< 0:8.0.16-1.el8_10 | < 0:8.0.16-1.el9_6 | < 0:8.0.16-1.el10_0 | < 0:8.0.16-1.el9_4
Microsoft10 products
Chainguard4 products
  • dotnet-8All versions (No fix recorded)
  • dotnet-9All versions (No fix recorded)
  • dotnet-9-sdkAll versions (No fix recorded)
  • dotnet-bootstrap-8All versions (No fix recorded) | < 8.0.122-r0
Ubuntu4 products
  • dotnet6All versions (No fix recorded)
  • dotnet7All versions (No fix recorded)
  • dotnet8< 8.0.116-8.0.16-0ubuntu1 | < 8.0.116-8.0.16-0ubuntu1~22.04.1 | < 8.0.116-8.0.16-0ubuntu1~24.04.1
  • dotnet9< 9.0.106-9.0.5-0ubuntu1
Wolfi4 products
  • dotnet-8All versions (No fix recorded)
  • dotnet-9All versions (No fix recorded)
  • dotnet-9-sdkAll versions (No fix recorded)
  • dotnet-bootstrap-8All versions (No fix recorded) | < 8.0.122-r0
NuGet1 product
  • Microsoft.Build.Tasks.Core≥ 15.8.166, < 15.9.30 | ≥ 16.0.461, < 16.11.6 | ≥ 17.0.0, < 17.8.29 | ≥ 17.9.5, < 17.10.29 | ≥ 17.11.4, < 17.12.36 | ≥ 17.12.6, < 17.13.26 | ≥ 17.13.9, < 17.14.8

6 vendors · 67 products

References

26 links
Show all 26 references