AUGUST 4, 2026
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Case File

CVE-2025-66019

UNKNOWN · CVSS N/A EPSS 0.35% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-11-26 · Last synced 2026-08-04

CyberRota Analysis

This vulnerability has an unknown severity rating. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

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

GitHub PoC Links
github.com ↗ github.com ↗ github.com ↗

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

CVE
CVE-2025-66019
Severity
UNKNOWN
CVSS
N/A
EPSS
0.35%

Original NVD Description

pypdf is a free and open-source pure-python PDF library. Prior to version 6.4.0, an attacker who uses this vulnerability can craft a PDF which leads to a memory usage of up to 1 GB per stream. This requires parsing the content stream of a page using the LZWDecode filter. This issue has been patched in version 6.4.0.