Search for vulnerabilities
Vulnerability details: VCID-jqyg-1q7b-uqgj
Vulnerability ID VCID-jqyg-1q7b-uqgj
Aliases CVE-2020-6807
Summary When a device was changed while a stream was about to be destroyed, the stream-reinit task may have been executed after the stream was destroyed, causing a use-after-free and a potentially exploitable crash.
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 8.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-6807.json
epss 0.01421 https://api.first.org/data/v1/epss?cve=CVE-2020-6807
epss 0.01474 https://api.first.org/data/v1/epss?cve=CVE-2020-6807
epss 0.01474 https://api.first.org/data/v1/epss?cve=CVE-2020-6807
epss 0.01474 https://api.first.org/data/v1/epss?cve=CVE-2020-6807
epss 0.01474 https://api.first.org/data/v1/epss?cve=CVE-2020-6807
epss 0.01474 https://api.first.org/data/v1/epss?cve=CVE-2020-6807
epss 0.01474 https://api.first.org/data/v1/epss?cve=CVE-2020-6807
epss 0.01474 https://api.first.org/data/v1/epss?cve=CVE-2020-6807
epss 0.01474 https://api.first.org/data/v1/epss?cve=CVE-2020-6807
epss 0.01474 https://api.first.org/data/v1/epss?cve=CVE-2020-6807
epss 0.01474 https://api.first.org/data/v1/epss?cve=CVE-2020-6807
epss 0.01474 https://api.first.org/data/v1/epss?cve=CVE-2020-6807
epss 0.01474 https://api.first.org/data/v1/epss?cve=CVE-2020-6807
epss 0.01474 https://api.first.org/data/v1/epss?cve=CVE-2020-6807
epss 0.01474 https://api.first.org/data/v1/epss?cve=CVE-2020-6807
epss 0.01474 https://api.first.org/data/v1/epss?cve=CVE-2020-6807
epss 0.01474 https://api.first.org/data/v1/epss?cve=CVE-2020-6807
epss 0.01474 https://api.first.org/data/v1/epss?cve=CVE-2020-6807
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2020-6807
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2020-6807
archlinux Critical https://security.archlinux.org/AVG-1112
archlinux Critical https://security.archlinux.org/AVG-1115
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2020-08
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2020-09
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2020-10
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-6807.json
https://api.first.org/data/v1/epss?cve=CVE-2020-6807
https://bugzilla.mozilla.org/show_bug.cgi?id=1614971
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20503
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6805
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6806
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6807
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6811
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6812
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6814
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://www.mozilla.org/security/advisories/mfsa2020-08/
https://www.mozilla.org/security/advisories/mfsa2020-09/
https://www.mozilla.org/security/advisories/mfsa2020-10/
1812201 https://bugzilla.redhat.com/show_bug.cgi?id=1812201
ASA-202003-11 https://security.archlinux.org/ASA-202003-11
ASA-202003-8 https://security.archlinux.org/ASA-202003-8
AVG-1112 https://security.archlinux.org/AVG-1112
AVG-1115 https://security.archlinux.org/AVG-1115
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:16.04:*:*:*:esm:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
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:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
CVE-2020-6807 https://nvd.nist.gov/vuln/detail/CVE-2020-6807
mfsa2020-08 https://www.mozilla.org/en-US/security/advisories/mfsa2020-08
mfsa2020-09 https://www.mozilla.org/en-US/security/advisories/mfsa2020-09
mfsa2020-10 https://www.mozilla.org/en-US/security/advisories/mfsa2020-10
RHSA-2020:0905 https://access.redhat.com/errata/RHSA-2020:0905
RHSA-2020:0914 https://access.redhat.com/errata/RHSA-2020:0914
RHSA-2020:0918 https://access.redhat.com/errata/RHSA-2020:0918
RHSA-2020:0919 https://access.redhat.com/errata/RHSA-2020:0919
USN-4299-1 https://usn.ubuntu.com/4299-1/
USN-4328-1 https://usn.ubuntu.com/4328-1/
USN-4335-1 https://usn.ubuntu.com/4335-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-6807.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:M/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2020-6807
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:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-6807
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 0.79765
EPSS Score 0.01421
Published At Aug. 16, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:40.463324+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2020/mfsa2020-09.yml 37.0.0