CVE-2019-11755
A crafted S/MIME message consisting of an inner encryption layer and an outer SignedData layer was shown as having a valid digital signature, although the signer might have had no access to the
02 Description
A crafted S/MIME message consisting of an inner encryption layer and an outer SignedData layer was shown as having a valid digital signature, although the signer might have had no access to the
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 1.28% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 69.9% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2019-09-27 17:10Z7 YR AGO
- Last updated
- 2024-08-04 23:03Z2 YR AGO
- Reserved
- 2019-05-03
- Assigning CNA
- mozilla
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- e2877a32f5889ed938ba5b2064072aaaf4d8d0609a7ec4b77b6ef1c025bb4956
05 Affected products
06 References
- bugzilla.mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1240290
- www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2019-32/
- lists.opensuse.orgopenSUSE-SU-2019:2248http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html
- lists.opensuse.orgopenSUSE-SU-2019:2249http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html
- seclists.org20191118 [SECURITY] [DSA 4571-1] thunderbird security updatehttps://seclists.org/bugtraq/2019/Nov/24
- www.debian.orgDSA-4571https://www.debian.org/security/2019/dsa-4571
- lists.debian.org[debian-lts-announce] 20191118 [SECURITY] [DLA 1997-1] thunderbird security updatehttps://lists.debian.org/debian-lts-announce/2019/11/msg00017.html
- usn.ubuntu.comUSN-4202-1https://usn.ubuntu.com/4202-1/
- usn.ubuntu.comUSN-4335-1https://usn.ubuntu.com/4335-1/
07 Fixed in
Debian 12
- thunderbird Fixed in 1:68.2.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- thunderbird Fixed in 1:68.2.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- thunderbird Fixed in 1:68.2.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- thunderbird Fixed in 1:68.7.0+build1-0ubuntu0.16.04.2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- thunderbird Fixed in 1:68.2.1+build1-0ubuntu0.18.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.