Cyber Resilience

CVE-2026-50525

DoS in Microsoft .Net Framework 3.5 … 4.8.1

Published
14 July 2026
Modified
24 July 2026
Patch / advisory
CVSS Score v3.1 7.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0060 45th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-50525 is a high-severity Allocation of Resources Without Limits or Throttling (CWE-770) vulnerability in Microsoft .Net Framework. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked at the 45th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SC-5 (Denial-of-service Protection) and SC-6 (Resource Availability) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service over a network.

CWE(s)

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1499.004 Application or System Exploitation Impact
Adversaries may exploit software vulnerabilities that can cause an application or system to crash and deny availability to users.
Why these techniques?

CWE-770 resource exhaustion vulnerability directly enables Endpoint DoS via application exploitation over the network.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2026-47302Same product: Apple Macos
CVE-2026-50648Same product: Apple Macos
CVE-2026-50651Same product: Apple Macos
CVE-2026-49787Same product: Microsoft Windows 10 1607
CVE-2026-45591Same product: Apple Macos
CVE-2026-49788Same product: Microsoft Windows 10 1607
CVE-2026-56170Same product: Apple Macos
CVE-2026-23468Same product: Linux Linux Kernel
CVE-2026-50506Same vendor: Microsoft
CVE-2026-45646Same vendor: Microsoft

Affected Assets

microsoft
.net framework
3.5, 4.6.2, 4.7, 4.7.1, 4.7.2
microsoft
.net
8.0.0 — 8.0.29 · 9.0.0 — 9.0.18 · 10.0.0 — 10.0.6
microsoft
visual studio 2022
17.12.0 — 17.12.22 · 17.14.0 — 17.14.36
microsoft
visual studio 2026
18.7.0 — 18.7.4

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • SC-5 Denial-of-service Protection
  • SC-6 Resource Availability
  • SC-7 Boundary Protection
Detect
Catch it (NIST detect / respond)

Harden
Shrink the surface (DISA STIG)
  • 5 hardening rules · 3 OS baselines
Validate
Prove the fix (OWASP ASVS)
  • V15.4.4

Mitigating Controls (NIST 800-53 r5) AI

prevent

Directly requires protection against or limiting of resource-exhaustion DoS attacks matching the unlimited allocation described in CVE-2026-50525.

prevent

Mandates safeguards that protect availability by limiting allocation of system resources, directly countering the CWE-770 weakness.

prevent

Boundary protection mechanisms (e.g., traffic throttling, connection limits) can restrict network-driven resource consumption before it reaches the vulnerable .NET component.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.IR-04 mostly match
degrades

Monitoring capacity and taking action to maintain availability directly reduces unchecked resource allocation.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

detects

Baseline comparison of CPU, memory and bandwidth usage helps surface uncontrolled resource allocations before they cause service degradation.

prevents

Capacity projections and elasticity measures ensure that allocation requests are bounded and can be throttled, reducing the window in which an attacker can force unbounded resource reservations.

mitigates

Defining retention periods and deletion schedules for backup copies prevents indefinite accumulation of data on storage media without corresponding resource-management controls.

mitigates

Architectural redundancy and automatic failover limit the impact of an attacker who forces excessive allocations, because spare capacity can absorb the load until the primary instance recovers.

none

Documented incident response procedures that include activation of continuity plans and controlled recovery help ensure that resource consumption triggered by an incident is bounded and managed rather than left unbounded.

none

Mandating tested continuity procedures that preserve or replace resource-limiting controls prevents an attacker from exploiting the absence of throttling mechanisms during an outage.

References