SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-27807

A carefully crafted PDF file can trigger an infinite loop while loading the file.

MEDIUM 5.5EPSS 2.99%

Does this matter?

Lower severity and a low EPSS score (2.99%). Track it; it rarely justifies an emergency change on its own.

Description

A carefully crafted PDF file can trigger an infinite loop while loading the file. This issue affects Apache PDFBox version 2.0.22 and prior 2.0.x versions.

CVSS 3.1
5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS
2.99% probability · 87th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-834
Affected
apache/pdfbox · fedoraproject/fedora · oracle/banking trade finance process management · oracle/banking treasury management · oracle/banking virtual account management · oracle/communications session report manager · oracle/flexcube universal banking · oracle/hyperion financial reporting · oracle/hyperion infrastructure technology · oracle/outside in technology · oracle/primavera unifier · oracle/retail customer management and segmentation foundation · oracle/retail xstore point of service · oracle/webcenter sites · oracle/communications messaging server
Source
security@apache.org
EPSS trend
0%3%5%26 October 2026: 2.99%26 October 202626 October 2026

EPSS 3.0% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.