CVE-2026-0529

Improper Validation of Array Index in Packetbeat Leading to Overflow Buffers

CVSS 6.5 MEDIUMEPSS 0.2%CWE-129

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.5EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

14 Jan 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Improper Validation of Array Index (CWE-129) in Packetbeat’s MongoDB protocol parser can allow an attacker to cause Overflow Buffers (CAPEC-100) through specially crafted network traffic. This requires an attacker to send a malformed payload to a monitored network interface where MongoDB protocol parsing is enabled.

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

Affected products

Elastic · Packetbeat

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

https://discuss.elastic.co/t/packetbeat-8-19-10-9-1-10-9-2-4-security-update-esa-2026-02/384520