Is CVE-2025-53114 actively exploited?

No active exploitation of CVE-2025-53114 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-53114 be exploited remotely?

Yes. CVE-2025-53114 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-53114?

CVE-2025-53114 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2025-53114

CWE-400Published: June 18, 2026· Updated: Jun 23, 2026

7.5

CVSS v3.1

Official Description

CometD is a scalable comet implementation for web messaging. In versions 5.0.0 through 5.0.22, 6.0.0 through 6.0.18, 7.0.0 through 7.0.18, and 8.0.0 through 8.0.8, bad clients that always send a fixed batch value when the server is using the acknowledgement extension may cause the unacknowledged message queue to grow indefinitely, eventually causing an `OutOfMemoryError`. Versions 5.0.23, 6.0.19, 7.0.19, and 8.0.9 patch the issue. As a workaround, disable the acknowledgement extension.

NVD Source

Technical Analysis

CVE-2025-53114 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.