CVE-2018-7453 — Infinite recursion in AcroForm::scanField in AcroForm.cc in xpdf 4.00 allows attackers to launch denial of service via a specific pdf file due to lack of loop checking, as demonstrated by pdftohtml

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MEDIUM

Infinite recursion in AcroForm::scanField in AcroForm.cc in xpdf 4.00 allows attackers to launch denial of service via a specific pdf file due to lack of loop checking, as demonstrated by pdftohtml

Published Feb 24, 2018

5.5

MEDIUM

CVSS 3.0

EPSS 0.90%

Description

Infinite recursion in AcroForm::scanField in AcroForm.cc in xpdf 4.00 allows attackers to launch denial of service via a specific pdf file due to lack of loop checking, as demonstrated by pdftohtml.

Affected products

Remediation

No remediation recorded yet.

Metrics

0.90% 0.00898

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00898

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (9 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	0.90% (0.00898)	58.14th	v5 (v2026.06.15)
Sep 20, 2026	0.90% (0.00898)	58.06th	v5 (v2026.06.15)
Jul 20, 2024	0.06% (0.00056)	23.83th	v3 (v2023.03.01)
May 17, 2024	0.06% (0.00056)	22.76th	v3 (v2023.03.01)
Mar 7, 2023	0.06% (0.00055)	20.73th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00885)	10.50th	v2 (v2022.01.01)
Feb 3, 2022	0.52% (0.00518)	11.68th	v5 (v2026.06.15)
Apr 14, 2021	0.52% (0.00518)	0.00th	v1

Weaknesses (1)

CWE-835

References (1)

https://forum.xpdfreader.com/viewtopic.php?p=814#p814
x_refsource_MISCIssue TrackingVendor Advisory

Link	Providers	Tags
https://forum.xpdfreader.com/viewtopic.php?p=814#p814		x_refsource_MISCIssue TrackingVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Feb 24, 2018

Updated Aug 5, 2024

Reserved Feb 23, 2018

Link CVE-2018-7453

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2018-7453

Red Hat

Severity n/a

Public date n/a

Links CVE-2018-7453