How severe is CVE-2026-25623?

CVE-2026-25623 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 high, integrity low, and availability low.

Is CVE-2026-25623 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-25623?

CVE-2026-25623 affects Arista Ng Firewall. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-25623?

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

Does CVE-2026-25623 have an EU (EUVD) identifier?

Yes. CVE-2026-25623 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34909.

When was CVE-2026-25623 published?

CVE-2026-25623 was published on 2026-06-05 and last updated on 2026-06-17.

CVE-2026-25623

CVE-2026-25623 is a medium-severity vulnerability in Arista Ng Firewall 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)
CVSS v4: 7.0
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34909
Weakness: CWE-78
Affected product: Arista Ng Firewall
Published: 2026-06-05
Last modified: 2026-06-17

Description

An input validation command execution vulnerability exists in the browser management pipeline of Arista Edge Threat Management - Arista Next Generation Firewall (NGFW). Authenticated administrators can leverage this exposure to obtain underlying terminal script code processing execution permissions.

Frequently asked questions

What is CVE-2026-25623?: An input validation command execution vulnerability exists in the browser management pipeline of Arista Edge Threat Management - Arista Next Generation Firewall (NGFW). Authenticated administrators can leverage this exposure to obtain underlying terminal script code processing execution permissions.
How severe is CVE-2026-25623?: CVE-2026-25623 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 high, integrity low, and availability low.
Is CVE-2026-25623 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-25623?: CVE-2026-25623 affects Arista Ng Firewall. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-25623?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-25623 have an EU (EUVD) identifier?: Yes. CVE-2026-25623 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34909.
When was CVE-2026-25623 published?: CVE-2026-25623 was published on 2026-06-05 and last updated on 2026-06-17.

References

https://www.arista.com/en/support/advisories-notices/security-advisory/23399-security-advisory-0133

Affected products (1)

cpe:2.3:a:arista:ng_firewall:*:*:*:*:*:*:*:*

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