How severe is CVE-2025-43877?

CVE-2025-43877 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-43877 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-43877?

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

Does CVE-2025-43877 have an EU (EUVD) identifier?

Yes. CVE-2025-43877 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18998.

When was CVE-2025-43877 published?

CVE-2025-43877 was published on 2025-06-24 and last updated on 2026-06-17.

CVE-2025-43877

CVE-2025-43877 is a medium-severity vulnerability with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v4: 4.8
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-18998
Weakness: CWE-79
Published: 2025-06-24
Last modified: 2026-06-17

Description

WRC-1167GHBK2-S contains a stored cross-site scripting vulnerability in WebGUI. If exploited, an arbitrary script may be executed on the web browser of the user who accessed WebGUI of the product.

Frequently asked questions

What is CVE-2025-43877?: WRC-1167GHBK2-S contains a stored cross-site scripting vulnerability in WebGUI. If exploited, an arbitrary script may be executed on the web browser of the user who accessed WebGUI of the product.
How severe is CVE-2025-43877?: CVE-2025-43877 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-43877 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-43877?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-43877 have an EU (EUVD) identifier?: Yes. CVE-2025-43877 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18998.
When was CVE-2025-43877 published?: CVE-2025-43877 was published on 2025-06-24 and last updated on 2026-06-17.

References

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

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CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
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CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

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