CVE-2025-36853

EOL .NET 6.0 Runtime Remote Code Execution Vulnerability

HIGH
7.5
CVSS Score
Published: September 8, 2025 at 01:48 PM UTC
Updated: June 17, 2026 at 09:14 AM UTC
1 product affected across 1 vendor.net

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Severity
HIGH7.5
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.0.0 ≤ v < 6.0.36>=6.0.0 ≤ v ≤ 6.0.366.0.0>=6.0.0
Affected range stops below 6.0.36, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

Vendor Advisory
Source: 36c7be3b-2937-45df-85ea-ca7133ea542c
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21172
Third Party Advisory
Source: 36c7be3b-2937-45df-85ea-ca7133ea542c
https://www.herodevs.com/vulnerability-directory/cve-2025-21172

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHHeroDevs
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-122CWE-190

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