Is CVE-2024-28861 actively exploited?

No active exploitation of CVE-2024-28861 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2024-28861 be exploited remotely?

Yes. CVE-2024-28861 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2024-28861?

CVE-2024-28861 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2024-28861

CRITICAL

CVE-2024-28861

CWE-502Published: March 22, 2024· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Symfony 1 is a community-driven fork of the 1.x branch of Symfony, a PHP framework for web projects. Starting in version 1.1.0 and prior to version 1.5.19, Symfony 1 has a gadget chain due to dangerous deserialization in `sfNamespacedParameterHolder` class that would enable an attacker to get remote code execution if a developer deserializes user input in their project. Version 1.5.19 contains a patch for the issue.

NVD Source

Risk Analysis

Symfony 1 contains a dangerous deserialization flaw that can lead to remote code execution if developers deserialize untrusted user input. Given the CVSS score of 9.8, this is a critical vulnerability for applications using this framework.

There is no public exploit known, and it is not in CISA KEV. The vulnerability is remotely exploitable with low complexity.

Recommended Action

Update Symfony 1 to version 1.5.19 or later to incorporate the necessary security patches.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2024-28861 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-502): Insecure deserialization vulnerabilities allow attackers to inject malicious objects during deserialization, potentially enabling remote code execution.