CVE-2025-27469
Published: 08 April 2025
Summary
CVE-2025-27469 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 4.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2025-27469 is an uncontrolled resource consumption vulnerability, tracked as CWE-400, that affects the Windows LDAP component. The flaw carries a CVSS 3.1 score of 7.5 and permits remote denial of service without any authentication or user interaction.
An unauthenticated attacker can send specially crafted network requests to a Windows LDAP service, triggering excessive resource consumption that renders the service unavailable and produces a high impact on availability while leaving confidentiality and integrity unaffected.
The associated Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-27469 addresses mitigation steps and patching guidance. Exploitation probability rose from a low baseline to a peak of 0.4442 on 2026-02-03 before receding to the current value of 0.1810, indicating a period of increased interest after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-10172
Vulnerability details
Uncontrolled resource consumption in Windows LDAP - Lightweight Directory Access Protocol 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.