CVE-2020-3812

Name: CVE-2020-3812
Creator: NVD / NIST
Published: 2020-05-26T13:15:10.733+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.43%

Last modified Jun 17, 2026

CVE-2020-3812 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. qmail-verify as used in netqmail 1.06 is prone to an information disclosure vulnerability. A local attacker can test for the existence of files and directories anywhere in the filesystem because qmail-verify runs as root and tests for the existence of files in the attacker's home directory, without dropping its privileges first.. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

Description

qmail-verify as used in netqmail 1.06 is prone to an information disclosure vulnerability. A local attacker can test for the existence of files and directories anywhere in the filesystem because qmail-verify runs as root and tests for the existence of files in the attacker's home directory, without dropping its privileges first.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.43%

34.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-269

Affected Software

Vendor	Product	Versions
Netqmail	Netqmail	1.06
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Canonical	Ubuntu Linux	20.04

References

https://bugs.debian.org/961060Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00002.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/4556-1/Third Party Advisory
https://www.debian.org/security/2020/dsa-4692Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/05/19/8Exploit, Mailing List, Patch, Third Party Advisory
https://bugs.debian.org/961060Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00002.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/4556-1/Third Party Advisory
https://www.debian.org/security/2020/dsa-4692Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/05/19/8Exploit, Mailing List, Patch, Third Party Advisory

Timeline

Published: May 26, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-3812?

How severe is CVE-2020-3812?

CVE-2020-3812 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.

How do I fix CVE-2020-3812?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-3812?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST