Search for vulnerabilities
Vulnerability details: VCID-f6t5-tcw3-d7gt
Vulnerability ID VCID-f6t5-tcw3-d7gt
Aliases CVE-2018-12383
Summary If a user saved passwords before Firefox 58 and then later set a master password, an unencrypted copy of these passwords is still accessible. This is because the older stored password file was not deleted when the data was copied to a new format starting in Firefox 58. The new master password is added only on the new file. This could allow the exposure of stored password data outside of user expectations.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-212 Improper Removal of Sensitive Information Before Storage or Transfer
CWE-522 Insufficiently Protected Credentials
System Score Found at
cvssv3 5.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-12383.json
epss 0.00071 https://api.first.org/data/v1/epss?cve=CVE-2018-12383
epss 0.00071 https://api.first.org/data/v1/epss?cve=CVE-2018-12383
epss 0.00071 https://api.first.org/data/v1/epss?cve=CVE-2018-12383
epss 0.00071 https://api.first.org/data/v1/epss?cve=CVE-2018-12383
epss 0.00071 https://api.first.org/data/v1/epss?cve=CVE-2018-12383
epss 0.00071 https://api.first.org/data/v1/epss?cve=CVE-2018-12383
epss 0.00071 https://api.first.org/data/v1/epss?cve=CVE-2018-12383
epss 0.00071 https://api.first.org/data/v1/epss?cve=CVE-2018-12383
epss 0.00071 https://api.first.org/data/v1/epss?cve=CVE-2018-12383
epss 0.00071 https://api.first.org/data/v1/epss?cve=CVE-2018-12383
epss 0.00071 https://api.first.org/data/v1/epss?cve=CVE-2018-12383
epss 0.00071 https://api.first.org/data/v1/epss?cve=CVE-2018-12383
epss 0.00071 https://api.first.org/data/v1/epss?cve=CVE-2018-12383
epss 0.00071 https://api.first.org/data/v1/epss?cve=CVE-2018-12383
epss 0.00072 https://api.first.org/data/v1/epss?cve=CVE-2018-12383
epss 0.00072 https://api.first.org/data/v1/epss?cve=CVE-2018-12383
epss 0.00072 https://api.first.org/data/v1/epss?cve=CVE-2018-12383
epss 0.00072 https://api.first.org/data/v1/epss?cve=CVE-2018-12383
cvssv2 2.1 https://nvd.nist.gov/vuln/detail/CVE-2018-12383
cvssv3 5.5 https://nvd.nist.gov/vuln/detail/CVE-2018-12383
archlinux Critical https://security.archlinux.org/AVG-782
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2018-20
generic_textual none https://www.mozilla.org/en-US/security/advisories/mfsa2018-23
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2018-25
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-12383.json
https://api.first.org/data/v1/epss?cve=CVE-2018-12383
https://bugzilla.mozilla.org/show_bug.cgi?id=1475775
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16541
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12376
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12377
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12378
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12379
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12383
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12385
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18499
https://lists.debian.org/debian-lts-announce/2018/11/msg00011.html
https://security.gentoo.org/glsa/201810-01
https://security.gentoo.org/glsa/201811-13
https://www.debian.org/security/2018/dsa-4304
https://www.debian.org/security/2018/dsa-4327
https://www.mozilla.org/security/advisories/mfsa2018-20/
https://www.mozilla.org/security/advisories/mfsa2018-23/
https://www.mozilla.org/security/advisories/mfsa2018-25/
http://www.securityfocus.com/bid/105276
http://www.securitytracker.com/id/1041610
http://www.securitytracker.com/id/1041701
1625531 https://bugzilla.redhat.com/show_bug.cgi?id=1625531
ASA-201810-13 https://security.archlinux.org/ASA-201810-13
AVG-782 https://security.archlinux.org/AVG-782
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:firefox_esr:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*:*
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: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:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
CVE-2018-12383 https://nvd.nist.gov/vuln/detail/CVE-2018-12383
mfsa2018-20 https://www.mozilla.org/en-US/security/advisories/mfsa2018-20
mfsa2018-23 https://www.mozilla.org/en-US/security/advisories/mfsa2018-23
mfsa2018-25 https://www.mozilla.org/en-US/security/advisories/mfsa2018-25
RHSA-2018:2834 https://access.redhat.com/errata/RHSA-2018:2834
RHSA-2018:2835 https://access.redhat.com/errata/RHSA-2018:2835
RHSA-2018:3403 https://access.redhat.com/errata/RHSA-2018:3403
RHSA-2018:3458 https://access.redhat.com/errata/RHSA-2018:3458
USN-3761-1 https://usn.ubuntu.com/3761-1/
USN-3793-1 https://usn.ubuntu.com/3793-1/
No exploits are available.
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-12383.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: AV:L/AC:L/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-12383
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:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-12383
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 0.2232
EPSS Score 0.00071
Published At Aug. 3, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:52.139970+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2018/mfsa2018-25.yml 37.0.0