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Vulnerability details: VCID-qur1-s5xs-tubx
Vulnerability ID VCID-qur1-s5xs-tubx
Aliases CVE-2020-6795
Summary When processing a message that contains multiple S/MIME signatures, a bug in the MIME processing code caused a null pointer dereference, leading to an unexploitable crash.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-476 NULL Pointer Dereference
System Score Found at
cvssv3 6.1 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-6795.json
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2020-6795
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2020-6795
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2020-6795
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2020-6795
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2020-6795
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2020-6795
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2020-6795
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2020-6795
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2020-6795
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2020-6795
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2020-6795
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2020-6795
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2020-6795
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2020-6795
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2020-6795
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2020-6795
epss 0.00688 https://api.first.org/data/v1/epss?cve=CVE-2020-6795
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2020-6795
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2020-6795
archlinux Critical https://security.archlinux.org/AVG-1099
generic_textual none https://www.mozilla.org/en-US/security/advisories/mfsa2020-07
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-6795.json
https://api.first.org/data/v1/epss?cve=CVE-2020-6795
https://bugzilla.mozilla.org/show_bug.cgi?id=1611105
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6792
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6793
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6794
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6795
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6798
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6800
https://security.gentoo.org/glsa/202003-10
https://www.mozilla.org/security/advisories/mfsa2020-07/
1801957 https://bugzilla.redhat.com/show_bug.cgi?id=1801957
ASA-202002-9 https://security.archlinux.org/ASA-202002-9
AVG-1099 https://security.archlinux.org/AVG-1099
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-2020-6795 https://nvd.nist.gov/vuln/detail/CVE-2020-6795
mfsa2020-07 https://www.mozilla.org/en-US/security/advisories/mfsa2020-07
RHSA-2020:0565 https://access.redhat.com/errata/RHSA-2020:0565
RHSA-2020:0574 https://access.redhat.com/errata/RHSA-2020:0574
RHSA-2020:0576 https://access.redhat.com/errata/RHSA-2020:0576
RHSA-2020:0577 https://access.redhat.com/errata/RHSA-2020:0577
USN-4328-1 https://usn.ubuntu.com/4328-1/
USN-4335-1 https://usn.ubuntu.com/4335-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-6795.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:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2020-6795
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:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-6795
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 0.7082
EPSS Score 0.00688
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:42.784594+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2020/mfsa2020-07.yml 37.0.0