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Case File

CVE-2018-6335

HIGH · CVSS 7.5 EPSS 1.47% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2018-12-31 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. Public exploit code or proof-of-concept references have been detected in its references. It may lead to a denial-of-service condition.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2018-6335
Severity
HIGH
CVSS
7.5
EPSS
1.47%

Original NVD Description

A Malformed h2 frame can cause 'std::out_of_range' exception when parsing priority meta data. This behavior can lead to denial-of-service. This affects all supported versions of HHVM (3.25.2, 3.24.6, and 3.21.10 and below) when using the proxygen server to handle HTTP2 requests.

Related CVEs

Other vulnerabilities affecting the same vendor(s)