CVE-2018-16369

XRef::fetch in XRef.cc in Xpdf 4.00 allows remote attackers to cause a denial of service (stack...

5.5 Medium

XRef::fetch in XRef.cc in Xpdf 4.00 allows remote attackers to cause a denial of service (stack consumption) via a crafted pdf file, related to AcroForm::scanField, as demonstrated by pdftohtml. NOTE: this might overlap CVE-2018-7453.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

1.62%Up 1.0 points since Apr 14, 2021

What each source reports

NVD Score used 5.5

Record: CVE-2018-16369
CVSS 3.0: 5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Updated: 2026-11-02

CVE List No score

Record: CVE-2018-16369
Updated: 2026-11-02

EUVDEUVD-2018-8215 No score

Record: EUVD-2018-8215
Updated: 2026-11-03

GitHub AdvisoriesGHSA-8qjh-h494-v558 5.5

XRef::fetch in XRef.cc in Xpdf 4.00 allows remote attackers to cause a denial of service (stack...

Record: GHSA-8qjh-h494-v558
CVSS 3.0: 5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSV 5.5

Record: CVE-2018-16369
CVSS 3.0: 5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2018-16369 5.5

Record: DEBIAN-CVE-2018-16369
CVSS 3.0: 5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2018-16369 5.5

Record: UBUNTU-CVE-2018-16369
CVSS 3.0: 5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

xpdfreader xpdf

Affected packages

Affected packages
Package	Affected	Fixed
`xpdf` Debian:12	All versions, plus listed versions 3.04+git20220601-13.04+git20231213-13.04+git20240118-13.04+git20240124-13.04+git20240202-1 Show 5 moreShow less 3.04+git20240613-13.04+git20250103-13.04+git20250304-13.04+git20260220-13.04+git20260802-1	None known
`xpdf` Debian:13	All versions, plus listed versions 3.04+git20250304-13.04+git20260220-13.04+git20260802-1	None known
`xpdf` Debian:14	All versions, plus listed versions 3.04+git20250304-13.04+git20260220-13.04+git20260802-1	None known
`ipe` Ubuntu:16.04:LTS	All versions, plus listed versions 7.1.4-2.17.1.8-17.1.10-17.1.10-1.1	None known
`xpdf` Ubuntu:16.04:LTS	All versions, plus listed versions 3.03-17ubuntu23.03-17ubuntu33.03-17ubuntu53.03-183.04-13.04-1build13.04-1ubuntu13.04-1ubuntu1.1	None known
`ipe` Ubuntu:18.04:LTS	All versions, plus listed versions 7.2.7-27.2.7-3	None known
`xpdf` Ubuntu:18.04:LTS	All versions, plus listed versions 3.04-4build13.04-53.04-5ubuntu23.04-6ubuntu13.04-7	None known
`ipe` Ubuntu:20.04:LTS	All versions, plus listed versions 7.2.9-17.2.13-27.2.13-2build1	None known
`ipe` Ubuntu:22.04:LTS	All versions, plus listed versions 7.2.23+dfsg1-27.2.24+dfsg1-17.2.24+dfsg1-1build1	None known
`xpdf` Ubuntu:22.04:LTS	All versions, plus listed versions 3.04+git20210103-3build13.04+git20211021-13.04+git20211021-1ubuntu13.04+git20220201-1	None known

Show 8 moreShow less

Affected packages
Package	Affected	Fixed
`ipe` Ubuntu:24.04:LTS	All versions, plus listed versions 7.2.27+dfsg1-27.2.28-27.2.28-2.1build27.2.28-2.1build37.2.28-2.1build4	None known
`xpdf` Ubuntu:24.04:LTS	All versions, plus listed versions 3.04+git20220601-1ubuntu13.04+git20220601-1ubuntu23.04+git20231213-13.04+git20240118-13.04+git20240124-1 Show 4 moreShow less 3.04+git20240202-13.04+git20240202-1build13.04+git20240202-1build23.04+git20240202-1build3	None known
`ipe` Ubuntu:25.10	All versions, plus listed versions 7.2.30-1build1	None known
`xpdf` Ubuntu:25.10	All versions, plus listed versions 3.04+git20250304-1	None known
`ipe` Ubuntu:26.10	All versions, plus listed versions 7.2.30-1build27.2.30-2	None known
`xpdf` Ubuntu:26.10	All versions, plus listed versions 3.04+git20260220-13.04+git20260220-1ubuntu13.04+git20260802-1	None known
`ipe` Ubuntu:26.04:LTS	All versions, plus listed versions 7.2.30-1build17.2.30-1build2	None known
`xpdf` Ubuntu:26.04:LTS	All versions, plus listed versions 3.04+git20250304-13.04+git20250304-1build13.04+git20260220-1	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-16369 is a medium vulnerability (CVSS 5.5) in Xpdfreader Xpdf, published September 3, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.62%, the 76th percentile. No source names a fixed version.