How severe is CVE-2019-16546?

CVE-2019-16546 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2019-16546 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-16546?

CVE-2019-16546 affects Jenkins Google Compute Engine. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-16546?

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

When was CVE-2019-16546 published?

CVE-2019-16546 was published on 2019-11-21 and last updated on 2026-06-17.

CVE-2019-16546

CVE-2019-16546 is a medium-severity vulnerability in Jenkins Google Compute Engine with a CVSS 3.x base score of 5.9. 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-639.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-639
Affected product: Jenkins Google Compute Engine
Published: 2019-11-21
Last modified: 2026-06-17

Description

Jenkins Google Compute Engine Plugin 4.1.1 and earlier does not verify SSH host keys when connecting agents created by the plugin, enabling man-in-the-middle attacks.

Frequently asked questions

What is CVE-2019-16546?: Jenkins Google Compute Engine Plugin 4.1.1 and earlier does not verify SSH host keys when connecting agents created by the plugin, enabling man-in-the-middle attacks.
How severe is CVE-2019-16546?: CVE-2019-16546 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2019-16546 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-16546?: CVE-2019-16546 affects Jenkins Google Compute Engine. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-16546?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-16546 published?: CVE-2019-16546 was published on 2019-11-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jenkins:google_compute_engine:*:*:*:*:*:jenkins:*:*

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