CVE-2025-49716
Published: 08 July 2025
Summary
CVE-2025-49716 is a high-severity Uncontrolled Resource Consumption (CWE-400) vulnerability in Microsoft Windows Server 2008. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 2.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2025-49716 is an uncontrolled resource consumption vulnerability (CWE-400) in Windows Netlogon that enables denial of service. The flaw received a CVSS v3.1 score of 7.5 and was published on 2025-07-08.
An unauthenticated attacker with network access can trigger the issue to exhaust resources in the Netlogon service, resulting in loss of availability for domain authentication without any impact on confidentiality or integrity.
The Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49716 supplies official mitigation and patch information. The associated EPSS values (current 0.3761, peak 0.3962) reflect moderate exploitation probability without evidence of a sharp post-disclosure increase.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-20627
Vulnerability details
Uncontrolled resource consumption in Windows Netlogon allows an unauthorized attacker to deny service over a network.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Limiting concurrent sessions directly prevents uncontrolled resource consumption by capping the number of active sessions per user or account.
Analysis identifies uncontrolled resource consumption indicative of denial-of-service or abuse attempts.
Contingency plan testing includes resource exhaustion scenarios to verify recovery, making it harder for attackers to sustain exploits that cause uncontrolled consumption.
Updated contingency plans include current procedures to detect, contain, and recover from resource exhaustion, limiting an attacker's ability to sustain impact from uncontrolled consumption.
Alternate site allows resumption of operations if resource exhaustion at the primary site is exploited to cause unavailability.
Alternate telecommunications services enable resumption of essential functions when primary services become unavailable due to uncontrolled resource consumption.
The team can analyze and respond to resource exhaustion incidents, reducing the impact of attacks that exploit uncontrolled consumption weaknesses.
Timely maintenance support and spare parts enable rapid recovery from failures induced by uncontrolled resource consumption, shortening the impact window of denial-of-service attacks.