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CVE-2013-4751

HIGH

php-symfony2-Validator has loss of information during serialization

Published
Nov 1, 2019
Updated
Jun 16, 2026
Affected
0 pkgs
Patched
None yet
Exploits
None indexed

EPSS Exploitation Probability

via FIRST.org ↗
1.4%probability of exploitation in next 30 days
Lower Risk70th percentile+0.88%
0.07%0.69%1.32%1.94%0.6%1.4%Dec 25Apr 26Jun 26

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

php-symfony2-Validator has loss of information during serialization

Affected Products

3 products · 7 configurations
OS
fedorafedoraproject
2 versions
1819
OS
enterprise linuxredhat
1 version
6.0
Application
symfonysensiolabs
≥ 2.3.0 && < 2.3.3
range

Detection & mitigation playbook

Vendor / appliance
  1. Detect

    Inventory every fedoraproject fedora 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. Fix

    Apply the fedoraproject fedora security patch or hotfix for CVE-2013-4751 on the affected version, following the vendor advisory for your exact build.

  3. Workarounds

    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-2013-4751 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-2013-4751. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

php-symfony2-Validator has loss of information during serialization
O3 Security · Runtime Protection

Is CVE-2013-4751 being exploited in your environment?

O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2013-4751 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.