Is CVE-2019-10149 in the CISA KEV catalog?

Yes. CVE-2019-10149 is on the CISA Known Exploited Vulnerabilities list, added 2022-01-10.

What is the CVSS severity of CVE-2019-10149?

CVE-2019-10149 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2019-10149?

CVE-2019-10149 has an EPSS score of 99.96% (100th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-10149?

Upgrade exim4 on debian 11 to 4.92~RC3-1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2019-10149

CRITICALCISA KEVEPSS 100th pctl

9.8

CVSS v3

NVD

Description

A flaw was found in Exim versions 4.87 to 4.91 (inclusive). Improper validation of recipient address in deliver_message() function in /src/deliver.c may lead to remote command execution.

CWE-78OS Command Injection

How to fix

Remediation Available

exim4Debian

Fixed in:4.92~RC3-1CVE-2019-10149

exim4Ubuntu

Fixed in:4.90.1-1ubuntu1.2USN-4010-1

exim4-daemon-heavyUbuntu

Fixed in:4.90.1-1ubuntu1.2USN-4010-1

exim4-daemon-lightUbuntu

Fixed in:4.90.1-1ubuntu1.2USN-4010-1

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

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

99.96%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Exim Mail Transfer Agent (MTA) Improper Input Validation

Improper validation of recipient address in deliver_message() function in /src/deliver.c may lead to remote command execution.

Apply updates per vendor instructions.

Remediation due: 2022-07-10

References

Patch1

openwall.com

Exploit5

Vendor Advisory1

exim.org

Third-Party Advisory13

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-78 (OS Command Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-1498	Critical	9.8	100%	KEV	Fix
CVE-2014-6271	Critical	9.8	100%	KEV	Fix
CVE-2019-16920	Critical	9.8	100%	KEV	-
CVE-2022-44877	Critical	9.8	100%	KEV	Fix
CVE-2020-8515	Critical	9.8	100%	KEV	-
CVE-2020-9054	Critical	9.8	100%	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 2025-11-06.