How severe is CVE-2025-57543?

CVE-2025-57543 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-57543 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-57543?

CVE-2025-57543 affects Netbox. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-57543?

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

Does CVE-2025-57543 have an EU (EUVD) identifier?

Yes. CVE-2025-57543 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208745.

When was CVE-2025-57543 published?

CVE-2025-57543 was published on 2026-03-16 and last updated on 2026-06-17.

CVE-2025-57543

CVE-2025-57543 is a medium-severity vulnerability in Netbox with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-208745
Weakness: CWE-79
Affected product: Netbox
Published: 2026-03-16
Last modified: 2026-06-17

Description

Cross Site scripting vulnerability (XSS) in NetBox 4.3.5 "comment" field on object forms. An attacker can inject arbitrary HTML, which will be rendered in the web UI when viewed by other users. This could potentially lead to user interface redress attacks or be escalated to XSS in certain contexts.

Frequently asked questions

What is CVE-2025-57543?: Cross Site scripting vulnerability (XSS) in NetBox 4.3.5 "comment" field on object forms. An attacker can inject arbitrary HTML, which will be rendered in the web UI when viewed by other users. This could potentially lead to user interface redress attacks or be escalated to XSS in certain contexts.
How severe is CVE-2025-57543?: CVE-2025-57543 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-57543 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-57543?: CVE-2025-57543 affects Netbox. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-57543?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-57543 have an EU (EUVD) identifier?: Yes. CVE-2025-57543 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208745.
When was CVE-2025-57543 published?: CVE-2025-57543 was published on 2026-03-16 and last updated on 2026-06-17.

References

https://gist.github.com/MerttTuran/d94acff59816bfd9492d1a738e89ebb4

Affected products (1)

cpe:2.3:a:netbox:netbox:4.3.5:*:*:*:*:*:*:*

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