CVE-2012-5364Public exploit

System hang via unbounded IPv6 route updates

Published Feb 20, 2020 · Updated Aug 6, 2024

Denial of service in Microsoft Windows 7 and earlier allows remote attackers to hang systems via an ICMPv6 Router Advertisement flood. The IPv6 autoconfiguration path accepts each advertised router and prefix, repeatedly updating routing tables and assigning addresses until CPU and memory are exhausted. The attacker must reach the target's local IPv6 link; the flood leaves Windows unresponsive until it stops.

CVSS severity7.5
High
EPSS probability14.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Microsoft Windows 7 and earlier allows remote attackers to hang systems via an ICMPv6 Router Advertisement flood. The IPv6 autoconfiguration path accepts each advertised router and prefix, repeatedly updating routing tables and assigning addresses until CPU and memory are exhausted. The attacker must reach the target's local IPv6 link; the flood leaves Windows unresponsive until it stops.

The record

CVE
CVE-2012-5364
Published
Feb 20, 2020
Updated
Aug 6, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-400, T1499.001
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 20, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.8NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499.001OS Exhaustion Flood

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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