Is CVE-2019-16791 in the CISA KEV catalog?

No. CVE-2019-16791 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-16791?

CVE-2019-16791 has a CVSS v3 base score of 6.9 (MEDIUM).

What is the EPSS score for CVE-2019-16791?

CVE-2019-16791 has an EPSS score of 0.67% (48th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-16791?

Upgrade postfix-mta-sts-resolver to 0.5.1 or later.

CVE & CISA-KEV Catalog

CVE-2019-16791

MEDIUM

6.9

CVSS v3

NVD

Description

In postfix-mta-sts-resolver before 0.5.1, All users can receive incorrect response from daemon under rare conditions, rendering downgrade of effective STS policy.

CWE-757

How to fix

Remediation Available

postfix-mta-sts-resolverNVD

Affected:< 0.5.1Fixed in:0.5.1CVE-2019-16791derived from NVD

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 VectorLocal

Attack ComplexityHigh

Privileges RequiredHigh

User InteractionRequired

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

0.67%probability of exploitation in 30 days

48thpercentile

Moderate risk: more likely to be exploited than 48% of all known CVEs.

References

Patch2

Related Vulnerabilities

Other CWE-757 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-10135	Medium	5.4	2.4%	-	Fix
CVE-2017-9269	High	7.7	2.3%	-	Fix
CVE-2021-36326	Medium	6.5	1.2%	-	Fix
CVE-2025-24154	Critical	9.1	1.1%	-	Fix
CVE-2019-14887	Critical	9.1	1.1%	-	-
CVE-2017-9267	Medium	6.5	1.0%	-	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.