Is CVE-2020-14954 in the CISA KEV catalog?

No. CVE-2020-14954 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-14954?

CVE-2020-14954 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2020-14954?

CVE-2020-14954 has an EPSS score of 2.29% (81th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-14954?

Upgrade mutt on debian 11 to 1.14.4-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2020-14954

MEDIUMEPSS 81th pctl

5.9

CVSS v3

NVD

Description

Mutt before 1.14.4 and NeoMutt before 2020-06-19 have a STARTTLS buffering issue that affects IMAP, SMTP, and POP3. When a server sends a "begin TLS" response, the client reads additional data (e.g., from a man-in-the-middle attacker) and evaluates it in a TLS context, aka "response injection."

CWE-74Injection

How to fix

Remediation Available

muttDebian

Fixed in:1.14.4-1CVE-2020-14954

muttUbuntu

Fixed in:1.5.24-1ubuntu0.4USN-4403-1

Fixed in:1.9.4-3ubuntu0.3USN-4403-1

Fixed in:1.13.2-1ubuntu0.2USN-4403-1

neomuttUbuntu

Fixed in:20171215+dfsg.1-1ubuntu0.1~esm1USN-7204-1

Fixed in:20191207+dfsg.1-1.1ubuntu0.1~esm1USN-7204-1

Fixed in:20211029+dfsg1-1ubuntu0.1~esm1USN-7204-1

Fixed in:20231103+dfsg1-1ubuntu0.1~esm1USN-7204-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploit Intelligence

2.29%probability of exploitation in 30 days

81stpercentile

Elevated risk: more likely to be exploited than 81% of all known CVEs.

References

Patch2

Vendor Advisory1

lists.mutt.org

Third-Party Advisory9

Release Notes1

github.com

Product1

mutt.org

Other references2

Related Vulnerabilities

Other CWE-74 (Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2013-2251	Critical	9.8	100%	KEV	Fix
CVE-2023-22527	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2019-2725	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-46169	Critical	9.8	100%	KEV	Fix
CVE-2022-35914	Critical	9.8	100%	KEV	-
CVE-2019-17558	High	7.5	99%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.