Packetbeat Improper Bounds Check

published 2025-12-18 10 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-204396

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 39%
public exploits: 0; none known

Improper Bounds Check (CWE-787) in Packetbeat can allow a remote unauthenticated attacker to exploit a Buffer Overflow (CAPEC-100) and reliably crash the application or cause significant resource exhaustion via a single crafted UDP packet with an invalid fragment sequence number.

Patch / fix

fixed in 1

elasticsearch packetbeat 8.19.9, 9.1.9, 9.2.3

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 10 mo ago (2025-12-18)

Exploit prediction

0.46% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.5	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Elastic Packetbeat

Classification

Weakness

CWE-787 Out-of-bounds Write

References

discuss.elastic.co /t/packetbeat-8-19-9-9-1-9-and-9-2-3-security-update-esa-2025-30/384178
vendor-advisory

Sources

CVE List CVE-2025-68381
NVD CVE-2025-68381

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary