Staging Environment: Content and features may be unstable or change without notice.
Search for vulnerabilities
Vulnerability details: VCID-qetw-2ah7-5ba4
Vulnerability ID VCID-qetw-2ah7-5ba4
Aliases CVE-2017-7809
Summary Multiple vulnerabilities have been found in Mozilla Thunderbird, the worst of which could lead to the execution of arbitrary code.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-416 Use After Free
System Score Found at
cvssv3 9.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-7809.json
epss 0.02292 https://api.first.org/data/v1/epss?cve=CVE-2017-7809
epss 0.02292 https://api.first.org/data/v1/epss?cve=CVE-2017-7809
epss 0.02292 https://api.first.org/data/v1/epss?cve=CVE-2017-7809
epss 0.02292 https://api.first.org/data/v1/epss?cve=CVE-2017-7809
epss 0.02292 https://api.first.org/data/v1/epss?cve=CVE-2017-7809
epss 0.02292 https://api.first.org/data/v1/epss?cve=CVE-2017-7809
epss 0.02292 https://api.first.org/data/v1/epss?cve=CVE-2017-7809
epss 0.02292 https://api.first.org/data/v1/epss?cve=CVE-2017-7809
epss 0.02292 https://api.first.org/data/v1/epss?cve=CVE-2017-7809
cvssv2 9.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2017-7809
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2017-7809
archlinux Critical https://security.archlinux.org/AVG-375
archlinux Critical https://security.archlinux.org/AVG-385
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-18
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-19
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-20
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-7809.json
https://api.first.org/data/v1/epss?cve=CVE-2017-7809
https://bugzilla.mozilla.org/show_bug.cgi?id=1380284
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7753
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7779
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7784
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7785
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7786
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7787
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7791
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7792
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7798
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7800
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7801
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7802
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7803
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7807
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7809
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://www.debian.org/security/2017/dsa-3928
https://www.debian.org/security/2017/dsa-3968
https://www.mozilla.org/security/advisories/mfsa2017-18/
https://www.mozilla.org/security/advisories/mfsa2017-19/
https://www.mozilla.org/security/advisories/mfsa2017-20/
http://www.securityfocus.com/bid/100203
http://www.securitytracker.com/id/1039124
1479650 https://bugzilla.redhat.com/show_bug.cgi?id=1479650
ASA-201708-18 https://security.archlinux.org/ASA-201708-18
ASA-201708-3 https://security.archlinux.org/ASA-201708-3
AVG-375 https://security.archlinux.org/AVG-375
AVG-385 https://security.archlinux.org/AVG-385
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:*:*:*:*:*:*:*:*
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:6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
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:7.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*
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_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-2017-7809 https://nvd.nist.gov/vuln/detail/CVE-2017-7809
GLSA-201802-03 https://security.gentoo.org/glsa/201802-03
GLSA-201803-14 https://security.gentoo.org/glsa/201803-14
mfsa2017-18 https://www.mozilla.org/en-US/security/advisories/mfsa2017-18
mfsa2017-19 https://www.mozilla.org/en-US/security/advisories/mfsa2017-19
mfsa2017-20 https://www.mozilla.org/en-US/security/advisories/mfsa2017-20
RHSA-2017:2456 https://access.redhat.com/errata/RHSA-2017:2456
RHSA-2017:2534 https://access.redhat.com/errata/RHSA-2017:2534
USN-3391-1 https://usn.ubuntu.com/3391-1/
USN-3416-1 https://usn.ubuntu.com/3416-1/
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-2017-7809.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:C/I:C/A:C 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: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
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:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2017-7809
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-2017-7809
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 0.84641
EPSS Score 0.02292
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:04:42.725968+00:00 Gentoo Importer Import https://security.gentoo.org/glsa/201803-14 38.0.0