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Vulnerability details: VCID-re3h-pcpx-puhe
Vulnerability ID VCID-re3h-pcpx-puhe
Aliases CVE-2017-5421
Summary A malicious site could spoof the contents of the print preview window if popup windows are enabled, resulting in user confusion of what site is currently loaded.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-20 Improper Input Validation
System Score Found at
epss 0.00405 https://api.first.org/data/v1/epss?cve=CVE-2017-5421
epss 0.00405 https://api.first.org/data/v1/epss?cve=CVE-2017-5421
epss 0.00405 https://api.first.org/data/v1/epss?cve=CVE-2017-5421
epss 0.00405 https://api.first.org/data/v1/epss?cve=CVE-2017-5421
epss 0.00405 https://api.first.org/data/v1/epss?cve=CVE-2017-5421
epss 0.00405 https://api.first.org/data/v1/epss?cve=CVE-2017-5421
epss 0.00405 https://api.first.org/data/v1/epss?cve=CVE-2017-5421
epss 0.00405 https://api.first.org/data/v1/epss?cve=CVE-2017-5421
epss 0.00405 https://api.first.org/data/v1/epss?cve=CVE-2017-5421
epss 0.00405 https://api.first.org/data/v1/epss?cve=CVE-2017-5421
cvssv2 6.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2017-5421
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2017-5421
archlinux Critical https://security.archlinux.org/AVG-194
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-05
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-09
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2017-5421
https://bugzilla.mozilla.org/show_bug.cgi?id=1301876
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://www.mozilla.org/security/advisories/mfsa2017-05/
https://www.mozilla.org/security/advisories/mfsa2017-09/
http://www.securityfocus.com/bid/96692
http://www.securitytracker.com/id/1037966
ASA-201703-3 https://security.archlinux.org/ASA-201703-3
AVG-194 https://security.archlinux.org/AVG-194
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
CVE-2017-5421 https://nvd.nist.gov/vuln/detail/CVE-2017-5421
mfsa2017-05 https://www.mozilla.org/en-US/security/advisories/mfsa2017-05
mfsa2017-09 https://www.mozilla.org/en-US/security/advisories/mfsa2017-09
USN-3216-1 https://usn.ubuntu.com/3216-1/
No exploits are available.
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
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: AV:N/AC:L/Au:N/C:N/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2017-5421
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:N/S:U/C:N/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2017-5421
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 0.60921
EPSS Score 0.00405
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:16:41.714868+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2017/mfsa2017-05.yml 38.0.0