CVE-2026-0529: Improper Validation of Array Index in Packetbeat Leading to Overflow Buffers
- Is it exploited?
Not on CISA's list. CISA has not added it to the Known Exploited Vulnerabilities catalog as of . If CISA adds it, this page shows it as known exploited.
- How likely is exploitation in the next 30 days?
- 0.2%
EPSS score, percentile 13.3 of all scored records. A probability estimated by FIRST, not a report of exploitation.
- How severe?
- 6.5 Medium
CVSS v3.1 base score, given by the CNA
- What should I do?
CISA has set no required action, because the vulnerability is not in KEV.
The CVE record links no vendor advisory, patch or mitigation.
- Which versions are affected?
Affected
- 7.0.0 through 7.17.29
- 8.0.0 through 8.19.9
- 9.0.0 through 9.1.9
- 9.2.0 through 9.2.3
Source: CISA KEV 2026.10.29, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.
What to do
Advisories and patches
The CVE record links no vendor advisory, patch or mitigation.
This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.
Affected products and versions
As listed in the CVE record.
| Status | Versions |
|---|---|
| Affected | 7.0.0 through 7.17.29 |
| Affected | 8.0.0 through 8.19.9 |
| Affected | 9.0.0 through 9.1.9 |
| Affected | 9.2.0 through 9.2.3 |
Versions not listed are: unaffected.
Source: CVE List, as of . About the data.
About this vulnerability
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.
Summary: CVE record, as of .
- CISA has not added CVE-2026-0529 to its Known Exploited Vulnerabilities (KEV) catalog, as of 29 Oct 2026.
- The CVE record was published on 14 Jan 2026.
- The CVE record carries a CVSS v3.1 base score of 6.5 (Medium), given by its CNA.
- FIRST's EPSS model puts the probability of exploitation in the next 30 days at 0.2% (percentile 13.3), as of 29 Oct 2026. EPSS is a statistical estimate, not a report of exploitation.
- CISA's SSVC assessment in the CVE record: exploitation none, automatable no, technical impact partial.
- The credits in the CVE record name AISLE as finder.
Source: CISA KEV 2026.10.29, as of ; CVE List, as of ; FIRST EPSS, as of . About the data.
Description
Improper Validation of Array Index in Packetbeat Leading to Overflow Buffers
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.
Source: CVE List, as of . About the data.
Weakness
CWE-129, 1 CAPEC
- CWE-129: Improper Validation of Array Index
Attack patterns (CAPEC)
- CAPEC-100: Overflow Buffers
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.
Timeline
| Date | Event |
|---|---|
| CVE record published |
References
1
Known exploited Elastic vulnerabilities
- CVE-2014-3120: Elasticsearch Remote Code Execution Vulnerability
- CVE-2015-1427: Elasticsearch Groovy Scripting Engine Remote Code Execution Vulnerability
- CVE-2019-7609: Kibana Arbitrary Code Execution