How severe is CVE-2018-14363?

CVE-2018-14363 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2018-14363 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-14363?

CVE-2018-14363 primarily affects Neomutt. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-14363?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-14363 published?

CVE-2018-14363 was published on 2018-07-17 and last updated on 2026-06-17.

CVE-2018-14363

CVE-2018-14363 is a high-severity vulnerability in Neomutt with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Neomutt
Published: 2018-07-17
Last modified: 2026-06-17

Description

An issue was discovered in NeoMutt before 2018-07-16. newsrc.c does not properly restrict '/' characters that may have unsafe interaction with cache pathnames.

Frequently asked questions

What is CVE-2018-14363?: An issue was discovered in NeoMutt before 2018-07-16. newsrc.c does not properly restrict '/' characters that may have unsafe interaction with cache pathnames.
How severe is CVE-2018-14363?: CVE-2018-14363 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2018-14363 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-14363?: CVE-2018-14363 primarily affects Neomutt. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-14363?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-14363 published?: CVE-2018-14363 was published on 2018-07-17 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:a:neomutt:neomutt:*:*:*:*:*:*:*:*

More vulnerabilities in Neomutt

CVE-2018-14362 — Critical (CVSS 9.8): An issue was discovered in Mutt before 1.10.1 and NeoMutt before 2018-07-16. pop.c does not forbid characters that may…
CVE-2018-14361 — Critical (CVSS 9.8): An issue was discovered in NeoMutt before 2018-07-16. nntp.c proceeds even if memory allocation fails for messages data.
CVE-2018-14360 — Critical (CVSS 9.8): An issue was discovered in NeoMutt before 2018-07-16. nntp_add_group in newsrc.c has a stack-based buffer overflow…
CVE-2018-14359 — Critical (CVSS 9.8): An issue was discovered in Mutt before 1.10.1 and NeoMutt before 2018-07-16. They have a buffer overflow via base64…
CVE-2018-14358 — Critical (CVSS 9.8): An issue was discovered in Mutt before 1.10.1 and NeoMutt before 2018-07-16. imap/message.c has a stack-based buffer…
CVE-2018-14357 — Critical (CVSS 9.8): An issue was discovered in Mutt before 1.10.1 and NeoMutt before 2018-07-16. They allow remote IMAP servers to execute…

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