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🛡️ CVE-2025-27479 — windows-server-2012

🟠 CVSS 7.5 — High ✅ No Known Exploit CWE-410 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Insufficient resource pool in Windows Kerberos allows an unauthorized attacker to deny service over a network.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: None.
  • Integrity impact: None.
  • Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2025-27479 is classified as CWE-410: Insufficient Resource Pool. The product's resource pool is not large enough to handle peak demand, which allows an attacker to prevent others from accessing the resource by using a (relatively) large number of requests for resources.

Affected software

CVE-2025-27479 is recorded against 6 packages.

  • windows-server-2012
  • windows-server-2016 (fixed in 10.0.14393.7969)
  • windows-server-2019 (fixed in 10.0.17763.7136)
  • windows-server-2022 (fixed in 10.0.20348.3453)
  • windows-server-2022-23h2 (fixed in 10.0.25398.1551)
  • windows-server-2025 (fixed in 10.0.26100.3775)

Timeline and source

Published on 8 April 2025 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

msrc.microsoft.com

Same weakness in other software

These advisories are the same class of weakness (CWE-410: Insufficient Resource Pool) in other software:

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-410
Public Exploit ✅ No
Source NVD
Published 2025-04-08
Updated 2026-08-20
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
windows-server-2012
windows-server-2016 10.0.14393.7969
windows-server-2019 10.0.17763.7136
windows-server-2022 10.0.20348.3453
windows-server-2022-23h2 10.0.25398.1551
windows-server-2025 10.0.26100.3775

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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