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Vulnerability details: VCID-m3b3-mkbm-k3hu
Vulnerability ID VCID-m3b3-mkbm-k3hu
Aliases CVE-2017-5373
Summary Mozilla developers and community members Christian Holler, Gary Kwong, André Bargull, Jan de Mooij, Tom Schuster, and Oriol reported memory safety bugs present in Thunderbird 45.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
System Score Found at
cvssv3 9.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-5373.json
epss 0.02031 https://api.first.org/data/v1/epss?cve=CVE-2017-5373
epss 0.02031 https://api.first.org/data/v1/epss?cve=CVE-2017-5373
epss 0.02031 https://api.first.org/data/v1/epss?cve=CVE-2017-5373
epss 0.02031 https://api.first.org/data/v1/epss?cve=CVE-2017-5373
epss 0.02031 https://api.first.org/data/v1/epss?cve=CVE-2017-5373
epss 0.02031 https://api.first.org/data/v1/epss?cve=CVE-2017-5373
epss 0.02031 https://api.first.org/data/v1/epss?cve=CVE-2017-5373
epss 0.02031 https://api.first.org/data/v1/epss?cve=CVE-2017-5373
epss 0.02031 https://api.first.org/data/v1/epss?cve=CVE-2017-5373
epss 0.02031 https://api.first.org/data/v1/epss?cve=CVE-2017-5373
epss 0.02031 https://api.first.org/data/v1/epss?cve=CVE-2017-5373
epss 0.02031 https://api.first.org/data/v1/epss?cve=CVE-2017-5373
cvssv2 6.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2017-5373
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2017-5373
archlinux Critical https://security.archlinux.org/AVG-157
archlinux Critical https://security.archlinux.org/AVG-158
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-01
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-02
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-03
Reference id Reference type URL
http://rhn.redhat.com/errata/RHSA-2017-0190.html
http://rhn.redhat.com/errata/RHSA-2017-0238.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-5373.json
https://api.first.org/data/v1/epss?cve=CVE-2017-5373
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1322315%2C1328834%2C1322420%2C1285833%2C1285960%2C1328251%2C1331058%2C1325938%2C1325877
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5373
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5375
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5376
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5378
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5380
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5383
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5386
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5390
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5396
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5398
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5400
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5401
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5402
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5404
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5405
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5407
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5408
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5410
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://security.gentoo.org/glsa/201702-13
https://security.gentoo.org/glsa/201702-22
https://www.debian.org/security/2017/dsa-3771
https://www.debian.org/security/2017/dsa-3832
https://www.mozilla.org/security/advisories/mfsa2017-01/
https://www.mozilla.org/security/advisories/mfsa2017-02/
https://www.mozilla.org/security/advisories/mfsa2017-03/
http://www.securityfocus.com/bid/95762
http://www.securitytracker.com/id/1037693
1415924 https://bugzilla.redhat.com/show_bug.cgi?id=1415924
ASA-201701-39 https://security.archlinux.org/ASA-201701-39
ASA-201701-40 https://security.archlinux.org/ASA-201701-40
AVG-157 https://security.archlinux.org/AVG-157
AVG-158 https://security.archlinux.org/AVG-158
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: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:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*
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:5.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:*
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_workstation:5.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:*
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-2017-5373 https://nvd.nist.gov/vuln/detail/CVE-2017-5373
mfsa2017-01 https://www.mozilla.org/en-US/security/advisories/mfsa2017-01
mfsa2017-02 https://www.mozilla.org/en-US/security/advisories/mfsa2017-02
mfsa2017-03 https://www.mozilla.org/en-US/security/advisories/mfsa2017-03
RHSA-2017:0190 https://access.redhat.com/errata/RHSA-2017:0190
RHSA-2017:0238 https://access.redhat.com/errata/RHSA-2017:0238
USN-3165-1 https://usn.ubuntu.com/3165-1/
USN-3175-1 https://usn.ubuntu.com/3175-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-5373.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: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:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2017-5373
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-2017-5373
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 0.83053
EPSS Score 0.02031
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:15.854801+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2017/mfsa2017-03.yml 37.0.0