HIGH CISA KEV
CVE-2026-21385
CVSS v3
7.8
HIGH
EPSS Score
1.3 %
exploit probability, as of 2026-10-18
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
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Affected and fixed versions
Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-21385 yet.
Description
Memory corruption while using alignments for memory allocation.
CISA Known Exploited Vulnerability
- Date Added
- 2026-03-03
- Patch Due Date
- 2026-03-24
- Ransomware Use
- Unknown
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Published
- 2026-03-02
- Last Modified
- 2026-03-04
Frequently asked questions
What is CVE-2026-21385?
Memory corruption while using alignments for memory allocation.
Is CVE-2026-21385 actively exploited?
Yes. CVE-2026-21385 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-03-24.
What is the CVSS score for CVE-2026-21385?
CVE-2026-21385 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
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