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Vulnerability details: VCID-qjs9-h3tt-qucf
Vulnerability ID VCID-qjs9-h3tt-qucf
Aliases CVE-2017-5391
Summary Special about: pages used by web content, such as RSS feeds, can load privileged about: pages in an iframe. If a content-injection bug were found in one of those pages this could allow for potential privilege escalation.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
epss 0.02446 https://api.first.org/data/v1/epss?cve=CVE-2017-5391
epss 0.02446 https://api.first.org/data/v1/epss?cve=CVE-2017-5391
epss 0.02446 https://api.first.org/data/v1/epss?cve=CVE-2017-5391
epss 0.02446 https://api.first.org/data/v1/epss?cve=CVE-2017-5391
epss 0.02446 https://api.first.org/data/v1/epss?cve=CVE-2017-5391
epss 0.02446 https://api.first.org/data/v1/epss?cve=CVE-2017-5391
epss 0.02446 https://api.first.org/data/v1/epss?cve=CVE-2017-5391
epss 0.02446 https://api.first.org/data/v1/epss?cve=CVE-2017-5391
epss 0.02446 https://api.first.org/data/v1/epss?cve=CVE-2017-5391
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2017-5391
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2017-5391
archlinux Critical https://security.archlinux.org/AVG-157
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-01
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2017-5391
https://bugzilla.mozilla.org/show_bug.cgi?id=1309310
https://www.mozilla.org/security/advisories/mfsa2017-01/
http://www.securityfocus.com/bid/95763
http://www.securitytracker.com/id/1037693
ASA-201701-39 https://security.archlinux.org/ASA-201701-39
AVG-157 https://security.archlinux.org/AVG-157
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:*:*:*:*:*:*:*:*
CVE-2017-5391 https://nvd.nist.gov/vuln/detail/CVE-2017-5391
mfsa2017-01 https://www.mozilla.org/en-US/security/advisories/mfsa2017-01
USN-3175-1 https://usn.ubuntu.com/3175-1/
No exploits are available.
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2017-5391
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:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2017-5391
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 0.85119
EPSS Score 0.02446
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:16:47.668023+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2017/mfsa2017-01.yml 38.0.0