# CVE-2013-2551: Microsoft Internet Explorer Use-After-Free Vulnerability

Source: https://junglewise.ai/threats/cve-2013-2551-microsoft-internet-explorer-use-after-free-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-03-28. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2013-2551 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2022-03-28

A use-after-free vulnerability in Microsoft Internet Explorer 6 through 10 allows remote attackers to execute arbitrary code. The flaw is triggered when a crafted website causes the browser to access a deleted object in memory.

Technologies: [Microsoft Edge](https://junglewise.ai/threats/technologies/edge), [Microsoft Internet Explorer](https://junglewise.ai/threats/technologies/internet-explorer). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2013-2551 exploited in the wild?** Yes. CVE-2013-2551 is known to be exploited in the wild, first recorded on 28 March 2022. Treat it as urgent.

**How severe is CVE-2013-2551?** Critical severity, with a CVSS score of 8.8, published 28 March 2022.

**Which products and versions are affected?** Microsoft Internet Explorer 6 through 10.

**Is there a fix for CVE-2013-2551?** A patch was published on 2013-05-14: Microsoft released security bulletin MS13-037 to address the issue. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2013-2551 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2013-2551?** Check whether you run Microsoft Edge or Microsoft Internet Explorer. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Microsoft Internet Explorer 6 through 10

## Timeline

- 2013-03-06: disclosed: Demonstrated by VUPEN during Pwn2Own competition at CanSecWest 2013.
- 2013-05-14: patched: Microsoft released security bulletin MS13-037 to address the issue.
- 2022-03-28: kev added: Added to CISA Known Exploited Vulnerabilities Catalog.

## Related threats

- [Microsoft Edge out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-122518-out-of-bounds-read-in-microsoft-edge-chromium-based-allows-an)
- [Microsoft Edge privilege escalation via incorrect authorization](https://junglewise.ai/threats/cve-2026-69446-incorrect-authorization-in-microsoft-edge-chromium-based-allows)
- [Microsoft Edge use-after-free privilege elevation](https://junglewise.ai/threats/cve-2026-96203-use-after-free-in-microsoft-edge-chromium-based-allows-an)
- [Microsoft Edge heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-96199-heap-based-buffer-overflow-in-microsoft-edge-chromium-based)
- [Microsoft Edge heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-96198-heap-based-buffer-overflow-in-microsoft-edge-chromium-based)