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Vulnerability details: VCID-22xt-tnu1-gyhu
Vulnerability ID VCID-22xt-tnu1-gyhu
Aliases CVE-2017-5415
Summary An attack can use a blob URL and script to spoof an arbitrary addressbar URL prefaced by blob: as the protocol, leading to user confusion and further spoofing attacks.
Status Published
Exploitability 2.0
Weighted Severity 9.0
Risk 10.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-20 Improper Input Validation
System Score Found at
epss 0.29152 https://api.first.org/data/v1/epss?cve=CVE-2017-5415
epss 0.29152 https://api.first.org/data/v1/epss?cve=CVE-2017-5415
epss 0.29152 https://api.first.org/data/v1/epss?cve=CVE-2017-5415
epss 0.29152 https://api.first.org/data/v1/epss?cve=CVE-2017-5415
epss 0.29152 https://api.first.org/data/v1/epss?cve=CVE-2017-5415
epss 0.29152 https://api.first.org/data/v1/epss?cve=CVE-2017-5415
epss 0.29152 https://api.first.org/data/v1/epss?cve=CVE-2017-5415
epss 0.29152 https://api.first.org/data/v1/epss?cve=CVE-2017-5415
epss 0.29152 https://api.first.org/data/v1/epss?cve=CVE-2017-5415
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-2017-5415
cvssv3 5.3 https://nvd.nist.gov/vuln/detail/CVE-2017-5415
archlinux Critical https://security.archlinux.org/AVG-194
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-05
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2017-5415
https://bugzilla.mozilla.org/show_bug.cgi?id=1321719
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://www.mozilla.org/security/advisories/mfsa2017-05/
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:*:*:*:*:*:*:*:*
CVE-2017-5415 Exploit https://github.com/649/CVE-2017-5415/tree/209b7ae6882a18ae51b1222a68c040a3bc9a8bc5
CVE-2017-5415 Exploit https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/local/44266.html
CVE-2017-5415 https://nvd.nist.gov/vuln/detail/CVE-2017-5415
mfsa2017-05 https://www.mozilla.org/en-US/security/advisories/mfsa2017-05
USN-3216-1 https://usn.ubuntu.com/3216-1/
Data source Exploit-DB
Date added March 9, 2018
Description Mozilla Firefox - Address Bar Spoofing
Ransomware campaign use Unknown
Source publication date April 14, 2017
Exploit type local
Platform multiple
Source update date March 9, 2018
Source URL https://github.com/649/CVE-2017-5415/tree/209b7ae6882a18ae51b1222a68c040a3bc9a8bc5
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-2017-5415
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:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2017-5415
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 0.96551
EPSS Score 0.29152
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:16:41.546436+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2017/mfsa2017-05.yml 38.0.0