Is CVE-2021-21158 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-2021-21158?

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

Yes. CVE-2021-21158 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-8549.

CVE-2021-21158 was published on 2025-01-17.

CVE-2021-21158 is a security vulnerability that is still awaiting full analysis and scoring.

Rejected reason: Further investigation determines issue is not within scope of this CNA

What is CVE-2021-21158?: Rejected reason: Further investigation determines issue is not within scope of this CNA
Is CVE-2021-21158 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-2021-21158?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2021-21158 have an EU (EUVD) identifier?: Yes. CVE-2021-21158 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-8549.
When was CVE-2021-21158 published?: CVE-2021-21158 was published on 2025-01-17.