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Vulnerability details: VCID-t63s-9tx3-hbc9
Vulnerability ID VCID-t63s-9tx3-hbc9
Aliases CVE-2018-20481
Summary XRef::getEntry in XRef.cc in Poppler 0.72.0 mishandles unallocated XRef entries, which allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted PDF document, when XRefEntry::setFlag in XRef.h is called from Parser::makeStream in Parser.cc.
Status Published
Exploitability 0.5
Weighted Severity 5.9
Risk 3.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-476 NULL Pointer Dereference
System Score Found at
cvssv3 3.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-20481.json
epss 0.01022 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01022 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01022 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01022 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01022 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01022 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01022 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01022 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01022 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01022 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01332 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01332 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01332 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01332 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01332 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01332 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01332 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01332 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01332 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01332 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01332 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01332 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01332 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
epss 0.01332 https://api.first.org/data/v1/epss?cve=CVE-2018-20481
cvssv3 3.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2018-20481
cvssv3 6.5 https://nvd.nist.gov/vuln/detail/CVE-2018-20481
Reference id Reference type URL
https://access.redhat.com/errata/RHSA-2019:2022
https://access.redhat.com/errata/RHSA-2019:2713
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-20481.json
https://api.first.org/data/v1/epss?cve=CVE-2018-20481
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20481
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://gitlab.freedesktop.org/poppler/poppler/issues/692
https://gitlab.freedesktop.org/poppler/poppler/merge_requests/143
https://lists.debian.org/debian-lts-announce/2019/03/msg00008.html
https://lists.debian.org/debian-lts-announce/2020/07/msg00018.html
http://www.securityfocus.com/bid/106321
1665266 https://bugzilla.redhat.com/show_bug.cgi?id=1665266
917325 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=917325
cpe:2.3:a:freedesktop:poppler:0.72.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:freedesktop:poppler:0.72.0:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
CVE-2018-20481 https://nvd.nist.gov/vuln/detail/CVE-2018-20481
USN-3865-1 https://usn.ubuntu.com/3865-1/
No exploits are available.
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-20481.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2018-20481
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-20481
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.76395
EPSS Score 0.01022
Published At Sept. 9, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:37:57.590746+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/3865-1/ 37.0.0