Back to Database
Status published
Medium
CVE-2025-62708
pypdf manipulated LZWDecode streams can exhaust RAM
Vulnerability Description
pypdf is a free and open-source pure-python PDF library. Prior to version 6.1.3, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream of a page using the LZWDecode filter. This has been fixed in pypdf version 6.1.3.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-62708
Credits & Attribution
No credits recorded in the NVD database.
References
More from py-pdf
View All →CVE-2025-66019
pypdf manipulated LZWDecode streams can exhaust RAM
Medium
6.6
CVE-2025-62707
pypdf affected by possible infinite loop when reading DCT inline images without EOF marker
Medium
6.6
CVE-2025-55197
pypdf's Manipulated FlateDecode streams can exhaust RAM
Medium
6.6
CVE-2023-46250
pypdf possible Infinite Loop when PdfWriter(clone_from) is used with a PDF
Medium
5.1
CVE-2023-36810
Quadratic runtime with malformed PDF missing xref marker in pypdf
Medium
6.2
Affected Vendor
py-pdf
View all reports →Affected Software
pypdf
Vulnerable Versions:
< 6.1.3
Timeline
Official Publish:
October 22nd, 2025
Last Modified:
October 23rd, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
Weaknesses (CWE)
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.