How severe is CVE-2023-24509?

CVE-2023-24509 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-24509 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-24509?

CVE-2023-24509 affects Arista Eos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-24509?

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

When was CVE-2023-24509 published?

CVE-2023-24509 was published on 2023-04-13 and last updated on 2026-06-17.

CVE-2023-24509

CVE-2023-24509 is a critical-severity vulnerability in Arista Eos with a CVSS 3.x base score of 9.3. 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-269.

Key facts

Severity: Critical (CVSS 3.x base score 9.3)
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Arista Eos
Published: 2023-04-13
Last modified: 2026-06-17

Description

On affected modular platforms running Arista EOS equipped with both redundant supervisor modules and having the redundancy protocol configured with RPR or SSO, an existing unprivileged user can login to the standby supervisor as a root user, leading to a privilege escalation. Valid user credentials are required in order to exploit this vulnerability.

Frequently asked questions

What is CVE-2023-24509?: On affected modular platforms running Arista EOS equipped with both redundant supervisor modules and having the redundancy protocol configured with RPR or SSO, an existing unprivileged user can login to the standby supervisor as a root user, leading to a privilege escalation. Valid user credentials are required in order to exploit this vulnerability.
How severe is CVE-2023-24509?: CVE-2023-24509 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-24509 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-24509?: CVE-2023-24509 affects Arista Eos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-24509?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-24509 published?: CVE-2023-24509 was published on 2023-04-13 and last updated on 2026-06-17.

References

https://www.arista.com/en/support/advisories-notices/security-advisory/16985-security-advisory-0082

Affected products (1)

cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*

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