How severe is CVE-2026-8658?

CVE-2026-8658 has a CVSS 3.x base score of 6.0, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability low.

Is CVE-2026-8658 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-8658?

CVE-2026-8658 affects Rapid7 Insightconnect Tcpdump. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-8658?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-8658 have an EU (EUVD) identifier?

Yes. CVE-2026-8658 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39163.

When was CVE-2026-8658 published?

CVE-2026-8658 was published on 2026-06-25 and last updated on 2026-06-29.

CVE-2026-8658

CVE-2026-8658 is a medium-severity vulnerability in Rapid7 Insightconnect Tcpdump with a CVSS 3.x base score of 6.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: Medium (CVSS 3.x base score 6.0)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39163
Weakness: CWE-78
Affected product: Rapid7 Insightconnect Tcpdump
Published: 2026-06-25
Last modified: 2026-06-29

Description

OS Command Injection vulnerability in Rapid7 InsightConnect Tcpdump Plugin on Linux allows authenticated attackers to execute arbitrary OS commands via the options or filter parameters due to insufficient input sanitization in shell command construction.

Frequently asked questions

What is CVE-2026-8658?: OS Command Injection vulnerability in Rapid7 InsightConnect Tcpdump Plugin on Linux allows authenticated attackers to execute arbitrary OS commands via the options or filter parameters due to insufficient input sanitization in shell command construction.
How severe is CVE-2026-8658?: CVE-2026-8658 has a CVSS 3.x base score of 6.0, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability low.
Is CVE-2026-8658 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-8658?: CVE-2026-8658 affects Rapid7 Insightconnect Tcpdump. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-8658?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-8658 have an EU (EUVD) identifier?: Yes. CVE-2026-8658 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39163.
When was CVE-2026-8658 published?: CVE-2026-8658 was published on 2026-06-25 and last updated on 2026-06-29.

References

https://extensions.rapid7.com/extension/tcpdump

Affected products (1)

cpe:2.3:a:rapid7:insightconnect_tcpdump:*:*:*:*:*:rapid7:*:*

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