How severe is CVE-2023-39248?

CVE-2023-39248 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-39248 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-39248?

CVE-2023-39248 affects Dell Networking Os10. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-39248?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-39248 published?

CVE-2023-39248 was published on 2023-12-05 and last updated on 2026-06-17.

CVE-2023-39248

CVE-2023-39248 is a high-severity vulnerability in Dell Networking Os10 with a CVSS 3.x base score of 7.5. 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: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Dell Networking Os10
Published: 2023-12-05
Last modified: 2026-06-17

Description

Dell OS10 Networking Switches running 10.5.2.x and above contain an Uncontrolled Resource Consumption (Denial of Service) vulnerability, when switches are configured with VLT and VRRP. A remote unauthenticated user can cause the network to be flooded leading to Denial of Service for actual network users. This is a high severity vulnerability as it allows an attacker to cause an outage of network. Dell recommends customers to upgrade at the earliest opportunity.

Frequently asked questions

What is CVE-2023-39248?: Dell OS10 Networking Switches running 10.5.2.x and above contain an Uncontrolled Resource Consumption (Denial of Service) vulnerability, when switches are configured with VLT and VRRP. A remote unauthenticated user can cause the network to be flooded leading to Denial of Service for actual network users. This is a high severity vulnerability as it allows an attacker to cause an outage of network. Dell recommends customers to upgrade at the earliest opportunity.
How severe is CVE-2023-39248?: CVE-2023-39248 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-39248 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-39248?: CVE-2023-39248 affects Dell Networking Os10. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-39248?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-39248 published?: CVE-2023-39248 was published on 2023-12-05 and last updated on 2026-06-17.

References

https://www.dell.com/support/kbdoc/en-us/000220138/dsa-2023-278-dell-networking-os10-security-updates-for-uncontrolled-resource-consumption

Affected products (1)

cpe:2.3:o:dell:networking_os10:10.5.5.5:*:*:*:*:*:*:*

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