Is CVE-2019-11467 actively exploited?

No active exploitation of CVE-2019-11467 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-11467 be exploited remotely?

Yes. CVE-2019-11467 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-11467?

CVE-2019-11467 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2019-11467

CWE-119Published: September 10, 2019· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

In Couchbase Server 4.6.3 and 5.5.0, secondary indexing encodes the entries to be indexed using collatejson. When index entries contain certain characters like \t, <, >, it caused buffer overrun as encoded string would be much larger than accounted for, causing indexer service to crash and restart. This has been remedied in versions 5.1.2 and 5.5.2 to ensure buffer always grows as needed for any input.

NVD Source

Technical Analysis

CVE-2019-11467 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 availability disruption (denial of service), with a CVSS base score of 7.5.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.