MEDIUM
CVE-2020-14093
CWE-319Published: June 15, 2020· Updated: Jun 17, 2026
5.9
CVSS v3.1
Official Description
Mutt before 1.14.3 allows an IMAP fcc/postpone man-in-the-middle attack via a PREAUTH response.
Technical Analysis
CVE-2020-14093 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 5.9.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Vendors & Products
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
ADVISORYhttp://www.mutt.org
ADVISORYhttps://bugs.gentoo.org/728300
ADVISORYhttps://usn.ubuntu.com/4401-1/
ADVISORYhttp://www.mutt.org
ADVISORYhttps://bugs.gentoo.org/728300
ADVISORYhttps://usn.ubuntu.com/4401-1/
All References (22)
→
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00064.htmlMailing List · Third Party Advisory
→
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00070.htmlMailing List · Third Party Advisory
→
http://www.mutt.orgVendor Advisory
→
https://bugs.gentoo.org/728300Third Party Advisory
→
https://github.com/muttmua/mutt/commit/3e88866dc60b5fa6aaba6fd7c1710c12c1c3cd01Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/06/msg00039.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/06/msg00040.htmlMailing List · Third Party Advisory
→
https://security.gentoo.org/glsa/202007-57Third Party Advisory
→
https://usn.ubuntu.com/4401-1/Third Party Advisory
→
https://www.debian.org/security/2020/dsa-4707Third Party Advisory
→
https://www.debian.org/security/2020/dsa-4708Third Party Advisory
→
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00064.htmlMailing List · Third Party Advisory
→
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00070.htmlMailing List · Third Party Advisory
→
http://www.mutt.orgVendor Advisory
→
https://bugs.gentoo.org/728300Third Party Advisory
Quick Facts
CVE IDCVE-2020-14093
CVSS Score5.9 / 10
SeverityMEDIUM
WeaknessCWE-319
CISA KEVNo
Affected4 vendor(s)
PublishedJun 15, 2020
Related CVEs (CWE-319)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-14093 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.