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Vulnerability details: VCID-mbab-8dyp-8qe2
Vulnerability ID VCID-mbab-8dyp-8qe2
Aliases CVE-2019-11739
Summary Encrypted S/MIME parts in a crafted multipart/alternative message can leak plaintext when included in a a HTML reply/forward.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-356 Product UI does not Warn User of Unsafe Actions
CWE-319 Cleartext Transmission of Sensitive Information
System Score Found at
cvssv3 6.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-11739.json
epss 0.00266 https://api.first.org/data/v1/epss?cve=CVE-2019-11739
epss 0.00266 https://api.first.org/data/v1/epss?cve=CVE-2019-11739
epss 0.00266 https://api.first.org/data/v1/epss?cve=CVE-2019-11739
epss 0.00266 https://api.first.org/data/v1/epss?cve=CVE-2019-11739
epss 0.00266 https://api.first.org/data/v1/epss?cve=CVE-2019-11739
epss 0.00266 https://api.first.org/data/v1/epss?cve=CVE-2019-11739
epss 0.00266 https://api.first.org/data/v1/epss?cve=CVE-2019-11739
epss 0.00266 https://api.first.org/data/v1/epss?cve=CVE-2019-11739
epss 0.00266 https://api.first.org/data/v1/epss?cve=CVE-2019-11739
epss 0.00266 https://api.first.org/data/v1/epss?cve=CVE-2019-11739
epss 0.00266 https://api.first.org/data/v1/epss?cve=CVE-2019-11739
epss 0.00266 https://api.first.org/data/v1/epss?cve=CVE-2019-11739
epss 0.00266 https://api.first.org/data/v1/epss?cve=CVE-2019-11739
epss 0.00266 https://api.first.org/data/v1/epss?cve=CVE-2019-11739
epss 0.00266 https://api.first.org/data/v1/epss?cve=CVE-2019-11739
epss 0.00266 https://api.first.org/data/v1/epss?cve=CVE-2019-11739
cvssv3 5.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2019-11739
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2019-11739
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2019-29
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2019-30
Reference id Reference type URL
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-11739.json
https://api.first.org/data/v1/epss?cve=CVE-2019-11739
https://bugzilla.mozilla.org/show_bug.cgi?id=1571481
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11739
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11740
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11742
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11743
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11744
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11746
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11752
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://www.mozilla.org/security/advisories/mfsa2019-29/
https://www.mozilla.org/security/advisories/mfsa2019-30/
1752307 https://bugzilla.redhat.com/show_bug.cgi?id=1752307
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-2019-11739 https://nvd.nist.gov/vuln/detail/CVE-2019-11739
mfsa2019-29 https://www.mozilla.org/en-US/security/advisories/mfsa2019-29
mfsa2019-30 https://www.mozilla.org/en-US/security/advisories/mfsa2019-30
RHSA-2019:2773 https://access.redhat.com/errata/RHSA-2019:2773
RHSA-2019:2774 https://access.redhat.com/errata/RHSA-2019:2774
RHSA-2019:2807 https://access.redhat.com/errata/RHSA-2019:2807
USN-4150-1 https://usn.ubuntu.com/4150-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-11739.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:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N 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:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-11739
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:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-11739
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 0.49942
EPSS Score 0.00266
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:58.157563+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2019/mfsa2019-29.yml 37.0.0