Search for vulnerabilities
Vulnerability details: VCID-4z5b-h6fw-aaaa
Vulnerability ID VCID-4z5b-h6fw-aaaa
Aliases CVE-2019-9820
Summary A use-after-free vulnerability can occur in the chrome event handler when it is freed while still in use. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.
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
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-9820.html
cvssv3 9.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-9820.json
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
epss 0.02089 https://api.first.org/data/v1/epss?cve=CVE-2019-9820
rhbs high https://bugzilla.redhat.com/show_bug.cgi?id=1712629
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18511
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11691
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11692
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11693
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11698
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5798
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-7317
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9797
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9800
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9816
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9817
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9819
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9820
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2019-9820
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2019-9820
archlinux Critical https://security.archlinux.org/AVG-966
generic_textual Medium https://ubuntu.com/security/notices/USN-3991-1
generic_textual Medium https://ubuntu.com/security/notices/USN-3997-1
generic_textual Medium https://usn.ubuntu.com/usn/usn-3991-1
generic_textual Medium https://usn.ubuntu.com/usn/usn-3997-1
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2019-13
generic_textual Medium https://www.mozilla.org/en-US/security/advisories/mfsa2019-13/#CVE-2019-9820
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2019-14
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2019-15
generic_textual Medium https://www.mozilla.org/en-US/security/advisories/mfsa2019-15/#CVE-2019-9820
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-9820.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-9820.json
https://api.first.org/data/v1/epss?cve=CVE-2019-9820
https://bugzilla.mozilla.org/show_bug.cgi?id=1536405
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18511
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11691
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11692
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11693
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11698
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5798
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-7317
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9797
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9800
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9816
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9817
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9819
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9820
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://ubuntu.com/security/notices/USN-3991-1
https://ubuntu.com/security/notices/USN-3997-1
https://usn.ubuntu.com/usn/usn-3991-1
https://usn.ubuntu.com/usn/usn-3997-1
https://www.mozilla.org/en-US/security/advisories/mfsa2019-13/#CVE-2019-9820
https://www.mozilla.org/en-US/security/advisories/mfsa2019-15/#CVE-2019-9820
https://www.mozilla.org/security/advisories/mfsa2019-13/
https://www.mozilla.org/security/advisories/mfsa2019-14/
https://www.mozilla.org/security/advisories/mfsa2019-15/
1712629 https://bugzilla.redhat.com/show_bug.cgi?id=1712629
ASA-201905-9 https://security.archlinux.org/ASA-201905-9
AVG-966 https://security.archlinux.org/AVG-966
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:*:*:*:*:*:*:*:*
CVE-2019-9820 https://nvd.nist.gov/vuln/detail/CVE-2019-9820
mfsa2019-13 https://www.mozilla.org/en-US/security/advisories/mfsa2019-13
mfsa2019-14 https://www.mozilla.org/en-US/security/advisories/mfsa2019-14
mfsa2019-15 https://www.mozilla.org/en-US/security/advisories/mfsa2019-15
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-2019-9820.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: CVSS:3.1/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-2019-9820
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-2019-9820
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 0.6547
EPSS Score 0.00554
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.