How severe is CVE-2017-4920?

CVE-2017-4920 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 none, integrity none, and availability high.

Is CVE-2017-4920 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-4920?

CVE-2017-4920 affects Vmware Nsx-v Edge. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-4920?

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

When was CVE-2017-4920 published?

CVE-2017-4920 was published on 2017-12-05 and last updated on 2026-06-17.

CVE-2017-4920

CVE-2017-4920 is a medium-severity vulnerability in Vmware Nsx-v Edge 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-400.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 7.1
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Vmware Nsx-v Edge
Published: 2017-12-05
Last modified: 2026-06-17

Description

The implementation of the OSPF protocol in VMware NSX-V Edge 6.2.x prior to 6.2.8 and NSX-V Edge 6.3.x prior to 6.3.3 doesn't correctly handle the link-state advertisement (LSA). A rogue LSA may exploit this issue resulting in continuous sending of LSAs between two routers eventually going in loop or loss of connectivity.

Frequently asked questions

What is CVE-2017-4920?: The implementation of the OSPF protocol in VMware NSX-V Edge 6.2.x prior to 6.2.8 and NSX-V Edge 6.3.x prior to 6.3.3 doesn't correctly handle the link-state advertisement (LSA). A rogue LSA may exploit this issue resulting in continuous sending of LSAs between two routers eventually going in loop or loss of connectivity.
How severe is CVE-2017-4920?: CVE-2017-4920 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 none, integrity none, and availability high.
Is CVE-2017-4920 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-4920?: CVE-2017-4920 affects Vmware Nsx-v Edge. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-4920?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-4920 published?: CVE-2017-4920 was published on 2017-12-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:vmware:nsx-v_edge:*:*:*:*:*:*:*:*

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