# CVE-2013-3163: Microsoft Internet Explorer Memory Corruption Vulnerability

Source: https://junglewise.ai/threats/cve-2013-3163-microsoft-internet-explorer-memory-corruption-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-03-30. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2013-3163 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2023-03-30

Microsoft Internet Explorer 8 through 10 contains a memory corruption vulnerability (out-of-bounds write) that allows remote attackers to execute arbitrary code or cause a denial of service via a crafted website. The vulnerability is actively exploited in the wild and is tracked in CISA's Known Exploited Vulnerabilities Catalog.

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-2013-3163 exploited in the wild?** Yes. CVE-2013-3163 is known to be exploited in the wild, first recorded on 30 March 2023. Treat it as urgent.

**How severe is CVE-2013-3163?** Critical severity, with a CVSS score of 8.8, published 30 March 2023.

**Which products and versions are affected?** Microsoft Internet Explorer 8 through 10.

**Is there a fix for CVE-2013-3163?** A patch was published on 2013-07-09: Microsoft Security Bulletin MS13-055 released. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2013-3163 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2013-3163?** 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 8 through 10

## Timeline

- 2013-07-09: patched: Microsoft Security Bulletin MS13-055 released.
- 2023-03-30: kev added: Added to CISA Known Exploited Vulnerabilities Catalog.
- 2023-03-30: disclosed

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- [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)