HOMEVULNERABILITIESCVE-2018-15133
HIGHCISA KEVIN THE WILD

CVE-2018-15133

Published: January 16, 2024

EPSS:86.03%probability of exploitation in 30 daysPercentile:99.4th

Official Description

Laravel Framework contains a deserialization of untrusted data vulnerability, allowing for remote command execution. This vulnerability may only be exploited if a malicious user has accessed the application encryption key (APP_KEY environment variable).

NVD Source

CISA KEV Advisory

Laravel Deserialization of Untrusted Data Vulnerability

Laravel Framework contains a deserialization of untrusted data vulnerability, allowing for remote command execution. This vulnerability may only be exploited if a malicious user has accessed the application encryption key (APP_KEY environment variable).

Added to KEV: 2024-01-16Federal patch deadline: 2024-02-06
Required Action (CISA)

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Risk Analysis

The Laravel Framework contains a deserialization vulnerability that can lead to remote command execution if an attacker has access to the application encryption key. The high EPSS score of 0.86029 indicates a very high likelihood of exploitation, making this a serious concern.

This vulnerability is actively exploited in the wild and is part of CISA's KEV catalog, confirming its use by attackers.

Recommended Action

Ensure your Laravel application encryption key (APP_KEY) is securely stored and not publicly accessible. Update Laravel Framework to a patched version.

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-2018-15133 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2018-15133 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.

Affected Vendors & Products

Mentioned vendors (from description):
Laravel
CPE data not yet available in NVD for this CVE.

Exploit & PoC Resources

ACTIVE EXPLOITATIONConfirmed exploitation in the wild
External links open in a new tab. Always verify in a controlled environment before use.

All References (2)

Quick Facts

CVE IDCVE-2018-15133
SeverityHIGH
CISA KEVYES — Active Exploitation
ExploitIN THE WILD
EPSS (30d)86.03%
PublishedJan 16, 2024

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2018-15133 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
  • !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
  • !Active exploitation confirmed — treat as P1
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.