Which products and versions are affected by CVE-2013-1305?

Affected: Windows 8 (Microsoft); Windows Rt (Microsoft); Windows Server 2012 (Microsoft). The full list is in the CVE brief.

Is CVE-2013-1305 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2013-1305 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2013-1305?

No public exploit code is known.

Is there a fix for CVE-2013-1305?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2013-1305 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2013-1305

High

HTTP.sys in Microsoft Windows 8, Windows Server 2012, and Windows RT allows remote attackers to cause a denial of service (infinite loop) via a crafted HTTP header, aka "HTTP.sys Denial of Service Vulnerability."

Published May 15, 2013 · Updated Apr 28, 2026

Key Facts

Patch immediately

CVE-2013-1305 is a high-severity vulnerability (CVSS 7.8 v2) affecting Windows 8 (Microsoft), Windows Rt (Microsoft), Windows Server 2012 (Microsoft).
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
EPSS estimates a 55% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v2

7.8

AV:N/AC:L/Au:N/C:N/I:N/A:C

EPSS (30-day exploit likelihood)

55%

Higher than 99.0% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

None known

Get the full CVE-2013-1305 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Affected Products

4 affected entries in total

Product	Affected versions	Fixed in
Windows 8Microsoft	See advisory	n/a
Windows RtMicrosoft	See advisory	n/a
Windows Server 2012Microsoft	See advisory	n/a

Timeline

Publicly disclosed
May 15, 2013
Last updated
Apr 28, 2026

Weakness Type

CWE-399

References

FAQ

Common Questions.

HTTP.sys in Microsoft Windows 8, Windows Server 2012, and Windows RT allows remote attackers to cause a denial of service (infinite loop) via a crafted HTTP header, aka "HTTP.sys Denial of Service Vulnerability."
Affected: Windows 8 (Microsoft); Windows Rt (Microsoft); Windows Server 2012 (Microsoft). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2013-1305 Running On Your Attack Surface?

Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.