Is CVE-2020-9040 actively exploited?

No active exploitation of CVE-2020-9040 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-9040 be exploited remotely?

Yes. CVE-2020-9040 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-9040?

CVE-2020-9040 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2020-9040

CWE-295Published: June 8, 2020· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

Couchbase Server Java SDK before 2.7.1.1 allows a potential attacker to forge an SSL certificate and pose as the intended peer. An attacker can leverage this flaw by crafting a cryptographically valid certificate that will be accepted by Java SDK's Netty component due to missing hostname verification.

NVD Source

Technical Analysis

CVE-2020-9040 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 7.5.