Vulnerability details

CVE-2025-36853

Microsoft NETMicrosoft Microsoft.NetCore.App.Runtime.linux-armMicrosoft Microsoft.NetCore.App.Runtime.linux-arm64Microsoft Microsoft.NetCore.App.Runtime.linux-musl-armMicrosoft Microsoft.NetCore.App.Runtime.linux-musl-arm64Microsoft Microsoft.NetCore.App.Runtime.linux-musl-x64

EOL .NET 6.0 Runtime Remote Code Execution Vulnerability

CVSS 3.1

7.5High

Official description

A vulnerability (CVE-2025-21172) exists in msdia140.dll due to integer overflow and heap-based overflow. Per CWE-122: Heap-based Buffer Overflow, a heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().‍ Per CWE-190: Integer Overflow or Wraparound, is when a product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number. NOTE: This CVE affects only End Of Life (EOL) software components. The vendor, Microsoft, has indicated there will be no future updates nor support provided upon inquiry.

CVSS scores

Score	Version	Source	Vector
7.5High	3.1	CVEProject cvelistV5 (CNA) (HeroDevs)	`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
Microsoft	.NET 6.0	6.0.0 ≤ v < 6.0.36	CVEProject cvelistV5 (CNA)
Microsoft	Microsoft.NetCore.App.Runtime.linux-arm	>=6.0.0 ≤ v ≤ 6.0.36	CVEProject cvelistV5 (CNA)
Microsoft	Microsoft.NetCore.App.Runtime.linux-arm64	>=6.0.0 ≤ v ≤ 6.0.36	CVEProject cvelistV5 (CNA)
Microsoft	Microsoft.NetCore.App.Runtime.linux-musl-arm	>=6.0.0 ≤ v ≤ 6.0.36	CVEProject cvelistV5 (CNA)
Microsoft	Microsoft.NetCore.App.Runtime.linux-musl-arm64	>=6.0.0 ≤ v ≤ 6.0.36	CVEProject cvelistV5 (CNA)
Microsoft	Microsoft.NetCore.App.Runtime.linux-musl-x64	>=6.0.0 ≤ v ≤ 6.0.36	CVEProject cvelistV5 (CNA)
Microsoft	Microsoft.NetCore.App.Runtime.linux-x64	>=6.0.0 ≤ v ≤ 6.0.36	CVEProject cvelistV5 (CNA)
Microsoft	Microsoft.NetCore.App.Runtime.osx-arm64	>=6.0.0 ≤ v ≤ 6.0.36	CVEProject cvelistV5 (CNA)
Microsoft	Microsoft.NetCore.App.Runtime.osx-x64	>=6.0.0 ≤ v ≤ 6.0.36	CVEProject cvelistV5 (CNA)
Microsoft	Microsoft.NetCore.App.Runtime.win-arm	>=6.0.0 ≤ v ≤ 6.0.36	CVEProject cvelistV5 (CNA)
Microsoft	Microsoft.NetCore.App.Runtime.win-arm64	>=6.0.0 ≤ v ≤ 6.0.36	CVEProject cvelistV5 (CNA)
Microsoft	Microsoft.NetCore.App.Runtime.win-x64	>=6.0.0 ≤ v ≤ 6.0.36	CVEProject cvelistV5 (CNA)
Microsoft	Microsoft.NetCore.App.Runtime.win-x86	>=6.0.0 ≤ v ≤ 6.0.36	CVEProject cvelistV5 (CNA)

References and advisories

https://www.herodevs.com/vulnerability-directory/cve-2025-21172 third-party-advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21172 vendor-advisory

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Details

Published: 2025-09-08
Last updated: 2025-09-08
State: Published
Assigner (CNA): HeroDevs

Exploit prediction (EPSS)

0.56%

Probability of exploitation in 30 days

47%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-190
Integer Overflow or Wraparound
CWE-122
Heap-based Buffer Overflow