What is the CVSS score of CVE-2020-3811?

CVE-2020-3811 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N. EPSS exploitation probability: 1.8%.

Is there a public PoC exploit available for CVE-2020-3811?

Yes, a public proof-of-concept exploit is available for CVE-2020-3811. Prioritise patching immediately. EPSS: 1.8%.

Netqmail CVE-2020-3811

HIGH

Improper Initialization (CWE-665)

2020-05-26 security@debian.org

Authentication Bypass Netqmail Debian Linux Ubuntu Linux

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Lifecycle Timeline

CVE Published

May 26, 2020 - 13:15 nvd

HIGH 7.5

DescriptionNVD

qmail-verify as used in netqmail 1.06 is prone to a mail-address verification bypass vulnerability.

AnalysisAI

qmail-verify as used in netqmail 1.06 is prone to a mail-address verification bypass vulnerability. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-665. qmail-verify as used in netqmail 1.06 is prone to a mail-address verification bypass vulnerability. Affected products include: Netqmail, Debian Debian Linux, Canonical Ubuntu Linux.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.