CVE-2019-16791

6.9 MEDIUM 0.9% exploit odds Fix listed

What it is

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.

At a glance

Exploitability: Can be exploited locally on the machine with an admin-level account, but needs a user to act. High risk of data exposure, data tampering.
Exploit odds: 0.9% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2020-01-22 02:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 02:22 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.9% in the next 30 days (EPSS).
Severity: 6.9 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2020-01-22 02:15 UTC
Last modified: 2026-06-17 02:22 UTC
Exploit probability: 0.9% · EPSS, next 30 days
Weakness: CWE-757
Record status: Modified

Affected

postfix-mta-sts-resolver Project postfix-mta-sts-resolver < 0.5.1

Attack profile CVSS 3.1 · 6.9

Attack vector: Local
Complexity: High
Privileges needed: High
User interaction: Required
Scope: Changed
Confidentiality: High
Integrity: High
Availability: None

Raw vector

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

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2019-16791.md and follow it. Check whether this project is affected by CVE-2019-16791. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

· More options · Status badge

Download Square Reddit

Fix and advisories

References

NVD record · CVE.org record