Which products and versions are affected by CVE-2013-1309?

Affected: Internet Explorer (Microsoft) versions 10, 6, 7, 8, 9. The full list is in the CVE brief.

Is CVE-2013-1309 being exploited in the wild?

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

Is CVE-2013-1309 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-2013-1309?

Public exploit code is available.

Is there a fix for CVE-2013-1309?

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

How urgently should CVE-2013-1309 be patched?

Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

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WatchlistCritical

CVE-2013-1309Internet Explorer Use-After-Free

Use-after-free vulnerability in Microsoft Internet Explorer 6 through 10 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to a deleted object, aka "Internet Explorer Use After Free Vulnerability," a different vulnerability than…

Published May 15, 2013 · Updated Apr 28, 2026

Key Facts

Patch immediately

CVE-2013-1309 is a critical-severity vulnerability (CVSS 9.3 v2) affecting Internet Explorer (Microsoft).
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 39% 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 public exploit code exists for a high-severity flaw.

Scores

CVSS v2

9.3

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

EPSS (30-day exploit likelihood)

39%

Higher than 98.5% of all scored CVEs

Exploit maturity

Proof of concept

ATLAS score

40/100

Publication score, see How it works

Exploitation Verdict

KEV listed

Not listed

Federal due date

None

No federal due date

Ransomware use

Not reported

Attributed actors

None named

Exploit & Defence Guidance

Exploit maturity

Proof of concept

Public exploit code

Proof-of-concept links

In-the-wild evidence

Reports of active use

Advisories And Exploit References

advisoryTA13-134A

Description

Affected Products

5 affected entries in total

Product	Affected versions	Fixed in
Internet ExplorerMicrosoft	10, 6, 7, 8, 9	n/a

Timeline

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

Weakness Type

CWE-416 Use After Free

References

advisoryTA13-134A
exploitExploitDB-40893
otherblog.skylined.nl · 20161207001.html
otherpacketstormsecurity.com · Microsoft-Internet-Explorer-MSHTML-CDispNode-In…
otherMS13-037

3 more references in the full CVE brief

FAQ

Common Questions.

Use-after-free vulnerability in Microsoft Internet Explorer 6 through 10 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to a deleted object, aka "Internet Explorer Use After Free Vulnerability," a different vulnerability than CVE-2013-1308 and CVE-2013-2551.
Affected: Internet Explorer (Microsoft) versions 10, 6, 7, 8, 9. 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.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

Is CVE-2013-1309 On Your Attack Surface?

Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.