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CVE-2012-6532

CVE-2012-6532 is a CWE-399 vulnerability in zend zend framework. O3 Security detects and blocks CVE-2012-6532 exploitation at runtime via eBPF exploit-chain detection and L7 egress monitoring, even on unpatched systems.

(1) Zend_Dom, (2) Zend_Feed, (3) Zend_Soap, and (4) Zend_XmlRpc in Zend Framework 1.x before 1.11.13 and 1.12.x before 1.12.0 allow remote attackers to cause a denial of service (CPU…

Published
Feb 13, 2013
Updated
Jun 16, 2026
Affected
0 pkgs
Patched
None yet
Exploits
None indexed

Description

(1) Zend_Dom, (2) Zend_Feed, (3) Zend_Soap, and (4) Zend_XmlRpc in Zend Framework 1.x before 1.11.13 and 1.12.x before 1.12.0 allow remote attackers to cause a denial of service (CPU consumption) via recursive or circular references in an XML entity definition in an XML DOCTYPE declaration, aka an XML Entity Expansion (XEE) attack.

Affected Products

1 product · 59 configurations
Application
zend frameworkzend
56 versions
1.0.41.5.01.5.11.5.21.5.31.6.01.6.11.6.21.7.01.7.11.7.21.7.3

Detection & mitigation playbook

Vendor / appliance
  1. Detect

    Inventory every zend zend framework deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.

  2. Remediation status

    No patch has shipped for CVE-2012-6532 yet — track the zend zend framework advisory for a fixed release and apply the workarounds below in the meantime.

  3. Mitigate without a patch

    Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.

  4. How O3 protects you

    O3 detects and blocks CVE-2012-6532 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Tailored to CVE-2012-6532. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

(1) Zend_Dom, (2) Zend_Feed, (3) Zend_Soap, and (4) Zend_XmlRpc in Zend Framework 1.x before 1.11.13 and 1.12.x before 1.12.0 allow remote attackers to cause a denial of service (CPU consumption) via recursive or circular references in an XML entity definition in an XML DOCTYPE declaration, aka an XML Entity Expansion (XEE) attack.
O3 Security · Runtime Protection

Is CVE-2012-6532 being exploited in your environment?

O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2012-6532 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.