How severe is CVE-2025-0421?

CVE-2025-0421 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-0421 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-2025-0421?

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

Does CVE-2025-0421 have an EU (EUVD) identifier?

Yes. CVE-2025-0421 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198157.

When was CVE-2025-0421 published?

CVE-2025-0421 was published on 2025-11-19 and last updated on 2026-06-17.

CVE-2025-0421

CVE-2025-0421 is a medium-severity vulnerability with a CVSS 3.x base score of 4.7. 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-1021.

Key facts

Severity: Medium (CVSS 3.x base score 4.7)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-198157
Weakness: CWE-1021
Published: 2025-11-19
Last modified: 2026-06-17

Description

Improper Restriction of Rendered UI Layers or Frames vulnerability in Shopside Software Technologies Inc. Shopside allows iFrame Overlay. This issue affects Shopside: through 05022025.

Frequently asked questions

What is CVE-2025-0421?: Improper Restriction of Rendered UI Layers or Frames vulnerability in Shopside Software Technologies Inc. Shopside allows iFrame Overlay. This issue affects Shopside: through 05022025.
How severe is CVE-2025-0421?: CVE-2025-0421 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-0421 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-2025-0421?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-0421 have an EU (EUVD) identifier?: Yes. CVE-2025-0421 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198157.
When was CVE-2025-0421 published?: CVE-2025-0421 was published on 2025-11-19 and last updated on 2026-06-17.

References

Other CWE-1021 vulnerabilities

CVE-2021-43048 — Critical (CVSS 9.8): The Interior Server and Gateway Server components of TIBCO Software Inc.'s TIBCO PartnerExpress contain a vulnerability…
CVE-2021-23274 — Critical (CVSS 9.8): The Config UI component of TIBCO Software Inc.'s TIBCO API Exchange Gateway and TIBCO API Exchange Gateway Distribution…
CVE-2016-2496 — Critical (CVSS 9.8): The Framework UI permission-dialog implementation in Android 6.x before 2016-06-01 allows attackers to conduct…
CVE-2021-21132 — Critical (CVSS 9.6): Inappropriate implementation in DevTools in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to…
CVE-2021-21111 — Critical (CVSS 9.6): Insufficient policy enforcement in WebUI in Google Chrome prior to 87.0.4280.141 allowed an attacker who convinced a…
CVE-2024-10004 — Critical (CVSS 9.1): Opening an external link to an HTTP website when Firefox iOS was previously closed and had an HTTPS tab open could in…

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