Is CVE-2020-28019 in the CISA KEV catalog?

No. CVE-2020-28019 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-28019?

CVE-2020-28019 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2020-28019?

CVE-2020-28019 has an EPSS score of 61.66% (99th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-28019?

Upgrade exim4 on debian 11 to 4.94.2-1 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2020-28019

HIGHEPSS 99th pctl

7.5

CVSS v3

NVD

Description

Exim 4 before 4.94.2 has Improper Initialization that can lead to recursion-based stack consumption or other consequences. This occurs because use of certain getc functions is mishandled when a client uses BDAT instead of DATA.

CWE-665

How to fix

Remediation Available

exim4Debian

Fixed in:4.94.2-1CVE-2020-28019

exim4Ubuntu

Fixed in:4.90.1-1ubuntu1.8USN-4934-1

Fixed in:4.93-13ubuntu1.5USN-4934-1

exim4-baseUbuntu

Fixed in:4.90.1-1ubuntu1.8USN-4934-1

Fixed in:4.93-13ubuntu1.5USN-4934-1

exim4-daemon-heavyUbuntu

Fixed in:4.90.1-1ubuntu1.8USN-4934-1

Fixed in:4.93-13ubuntu1.5USN-4934-1

exim4-daemon-lightUbuntu

Fixed in:4.90.1-1ubuntu1.8USN-4934-1

Fixed in:4.93-13ubuntu1.5USN-4934-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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 ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

61.66%probability of exploitation in 30 days

99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

References

Vendor Advisory1

exim.org

Related Vulnerabilities

Other CWE-665 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-0847	High	7.8	89%	KEV	Fix
CVE-2022-22719	High	7.5	70%	-	Fix
CVE-2022-46164	Critical	9.4	49%	-	Fix
CVE-2022-37128	Critical	9.8	21%	-	-
CVE-2019-14271	Critical	9.8	19%	-	Fix
CVE-2012-0012	Medium	4.3	17%	-	-

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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.