CVE-2018-14355 [Medium] | Path Traversal in Debian Linux

CVE-2018-14355 is rated Moderate Risk (54.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.32%). EPSS rose +2.51% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.81%	3.32%	+2.51%
2	2026-05-15	0.75%	0.81%	+0.06%
3	2026-02-24	—	0.75%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.81%

3.32%

+2.51%

2026-05-15

0.75%

0.81%

+0.06%

2026-02-24

—

0.75%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
5.3	3.1	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. 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:N) Data isn’t meaningfully altered or forged. Availability (A:N) Service keeps running; no real outage angle.	3.9	1.4	[email protected]
5.0	2.0	MEDIUM	`AV:N/AC:L/Au:N/C:P/I:N/A:N` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:N) No integrity impact. Availability impact (A:N) No availability impact.	10.0	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

5.3

3.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
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:N): Data isn’t meaningfully altered or forged.
Availability (A:N): Service keeps running; no real outage angle.

3.9

1.4

[email protected]

5.0

2.0

MEDIUM

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

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:L): Exploitation conditions are straightforward and predictable.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:N): No integrity impact.
Availability impact (A:N): No availability impact.

10.0

2.9

[email protected]

OS Trackers for CVE-2018-14355

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2018-14355 not yet assigned 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-2018-14355
`gentoo`	normal	CVE-2018-14355: 1 GLSA(s) (201810-07), 2 atom(s) (mail-client/neomutt, net-client/mutt); latest impact normal.	https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2018-14355
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2018-14355
`suse`	medium	CVE-2018-14355 severity moderate: SUSE including 24 source package names (mutt-1.10.1-3.3.4, mutt-1.10.1-55.6.1, …), 65 product×package rows across 38 product lines (Image SLES12-SP5-Azure-SAP-BYOS, Image SLES12-SP5-Azure-SAP-On-Demand, … (38 product lines)): Fixed 65.	https://www.suse.com/security/cve/CVE-2018-14355/
`ubuntu`	medium	CVE-2018-14355 medium priority: Ubuntu including 2 source packages (mutt, neomutt), 36 status rows across 18 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, trusty, upstream, xenial): released 19, not-affected 12, DNE 3, ignored 2.	https://ubuntu.com/security/CVE-2018-14355

Affected software / configurations for CVE-2018-14355

Vendor	Product	Version	Raw CPE
debian	debian_linux	8.0	cpe:2.3:o:debian:debian_linux:8.0:::::::*
debian	debian_linux	9.0	cpe:2.3:o:debian:debian_linux:9.0:::::::*
mutt	mutt	< 1.10.1	cpe:2.3:a:mutt:mutt::::::::
neomutt	neomutt	< 20180716	cpe:2.3:a:neomutt:neomutt::::::::
canonical	ubuntu_linux	16.04	cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::

References for CVE-2018-14355

URL	Tags
http://www.mutt.org/news.html	Release Notes Vendor Advisory
https://github.com/neomutt/neomutt/commit/57971dba06346b2d7179294f4528b8d4427a7c5d	Patch Third Party Advisory
https://gitlab.com/muttmua/mutt/commit/31eef6c766f47df8281942d19f76e35f475c781d	Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/08/msg00001.html	Mailing List Third Party Advisory
https://neomutt.org/2018/07/16/release	Release Notes Vendor Advisory
https://security.gentoo.org/glsa/201810-07	Third Party Advisory
https://usn.ubuntu.com/3719-3/	Third Party Advisory
https://www.debian.org/security/2018/dsa-4277	Third Party Advisory

URL

CVE-2018-14355

Exploit prediction scoring system (EPSS) score for CVE-2018-14355

Common vulnerability scoring system (CVSS) metrics for CVE-2018-14355

Weakness enumeration for CVE-2018-14355

OS Trackers for CVE-2018-14355

Affected software / configurations for CVE-2018-14355

References for CVE-2018-14355