CVE-2020-14154 [Medium] | Security Vulnerability in Mutt

CVE-2020-14154 is rated Moderate Risk (40.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.06%). Review affected assets and schedule remediation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.66%	1.06%	+0.40%
2	2025-12-28	0.62%	0.66%	+0.04%
3	2025-12-27	—	0.62%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.66%

1.06%

+0.40%

2025-12-28

0.62%

0.66%

+0.04%

2025-12-27

—

0.62%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
4.8	3.1	MEDIUM	`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:H) Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:L) Some sensitive info could get out, but not a total data dump. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:N) Service keeps running; no real outage angle.	2.2	2.5	[email protected]
5.8	2.0	MEDIUM	`AV:N/AC:M/Au:N/C:P/I:P/A:N` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:M) Exploitation needs some favorable conditions, but not exceptional ones. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:N) No availability impact.	8.6	4.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

4.8

3.1

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H): Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L): Some sensitive info could get out, but not a total data dump.
Integrity (I:L): Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N): Service keeps running; no real outage angle.

2.2

2.5

[email protected]

5.8

2.0

MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:N Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:M): Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:N): No availability impact.

8.6

4.9

[email protected]

OS Trackers for CVE-2020-14154

vendor	priority	summary	link
`debian`	unimportant	CVE-2020-14154 unimportant priority: Debian including 2 source packages (mutt, neomutt), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 10.	https://security-tracker.debian.org/tracker/CVE-2020-14154
`gentoo`	normal	CVE-2020-14154: 1 GLSA(s) (202007-57), 2 atom(s) (mail-client/mutt, mail-client/neomutt); latest impact normal.	https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2020-14154
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2020-14154
`suse`	high	CVE-2020-14154 severity important: SUSE including 35 source package names (mutt-1.10.1-3.8.1, mutt-1.10.1-55.11.1, …), 92 product×package rows across 49 product lines (HPE Helion OpenStack 8, Image SLES12-SP5-Azure-SAP-BYOS, … (49 product lines)): Fixed 92.	https://www.suse.com/security/cve/CVE-2020-14154/
`ubuntu`	low	CVE-2020-14154 low priority: Ubuntu including 1 source packages (mutt), 6 status rows across 6 suites (bionic, eoan, focal, trusty, upstream, xenial): released 4, DNE 1, needs-triage 1.	https://ubuntu.com/security/CVE-2020-14154

Affected software / configurations for CVE-2020-14154

Vendor	Product	Version	Raw CPE
mutt	mutt	< 1.14.3	cpe:2.3:a:mutt:mutt::::::::
canonical	ubuntu_linux	12.04	cpe:2.3:o:canonical:ubuntu_linux:12.04::::-:::
canonical	ubuntu_linux	16.04	cpe:2.3:o:canonical:ubuntu_linux:16.04::::esm:::
canonical	ubuntu_linux	18.04	cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::
canonical	ubuntu_linux	19.10	cpe:2.3:o:canonical:ubuntu_linux:19.10:::::::*
canonical	ubuntu_linux	20.04	cpe:2.3:o:canonical:ubuntu_linux:20.04::::lts:::

References for CVE-2020-14154

URL	Tags
http://lists.mutt.org/pipermail/mutt-announce/Week-of-Mon-20200608/000022.html	Mailing List Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00064.html	Broken Link
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00070.html	Broken Link
http://www.mutt.org	Product Vendor Advisory
https://bugs.gentoo.org/728300	Third Party Advisory
https://security.gentoo.org/glsa/202007-57	Third Party Advisory
https://usn.ubuntu.com/4401-1/	Third Party Advisory

URL

CVE-2020-14154

Exploit prediction scoring system (EPSS) score for CVE-2020-14154

Common vulnerability scoring system (CVSS) metrics for CVE-2020-14154

Weakness enumeration for CVE-2020-14154

OS Trackers for CVE-2020-14154

Affected software / configurations for CVE-2020-14154

References for CVE-2020-14154