SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2013-3183

The TCP/IP implementation in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows Server 2012, and Windows RT does not properly perform memory allocation for inbound ICMPv6 packets, which allows remote…

HIGH 7.8EPSS 78.1%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 78.1%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.

Description

The TCP/IP implementation in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows Server 2012, and Windows RT does not properly perform memory allocation for inbound ICMPv6 packets, which allows remote attackers to cause a denial of service (system hang) via crafted packets, aka "ICMPv6 Vulnerability."

CVSS 2.0
7.8 HIGHAV:N/AC:L/Au:N/C:N/I:N/A:C
EPSS
78.10% probability · 100th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-119
Affected
microsoft/windows 7 · microsoft/windows 8 · microsoft/windows rt · microsoft/windows server 2008 · microsoft/windows server 2012 · microsoft/windows vista
Source
secure@microsoft.com
EPSS trend
0%40%80%4 November 2026: 78.10%4 November 20264 November 2026

EPSS 78.1% since 4 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.