6.5

CVE-2026-0529: elastic packetbeat Improper Validation of Array Index

CVSS: 6.5v3.1MediumDeferred
Published 14-01-2026Last modified 14-01-2026
Open JSON

Vulnerability summary

CVE-2026-0529 is a medium (CVSS 6.5) Improper Validation of Array Index vulnerability in elastic packetbeat. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 12.3% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.23%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-01-2026
    PublishedVulnerability first disclosed.
  2. 14-01-2026
    Last modifiedVulnerability information updated.

Description

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 metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

12%

Versus all other CVEs

30-day change

0.00 pp

From 0.22% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.23%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Elastic1 product
  • packetbeat≥ 7.0.0, ≤ 7.17.29 | ≥ 8.0.0, ≤ 8.19.9 | ≥ 9.0.0, ≤ 9.1.9 | ≥ 9.2.0, ≤ 9.2.3

1 vendor · 1 product

References

1 links