Is CVE-2026-4821 being actively exploited?

It is not currently listed in CISA's Known Exploited Vulnerabilities catalog, and no EPSS exploit-prediction score is available yet.

How do I fix CVE-2026-4821?

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

Yes. CVE-2026-4821 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24547.

CVE-2026-4821 was published on 2026-04-21 and last updated on 2026-06-10.

CVE-2026-4821 is a security vulnerability that is still awaiting full analysis and scoring.

Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority as it was published in error.

What is CVE-2026-4821?: Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority as it was published in error.
Is CVE-2026-4821 being actively exploited?: It is not currently listed in CISA's Known Exploited Vulnerabilities catalog, and no EPSS exploit-prediction score is available yet.
How do I fix CVE-2026-4821?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-4821 have an EU (EUVD) identifier?: Yes. CVE-2026-4821 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24547.
When was CVE-2026-4821 published?: CVE-2026-4821 was published on 2026-04-21 and last updated on 2026-06-10.