CVE-2026-21385
CWE-190Published: March 2, 2026· Updated: Mar 4, 2026
Official Description
Memory corruption while using alignments for memory allocation.
Technical Analysis
CVE-2026-21385 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.
CISA has added CVE-2026-21385 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
News & Research Mentioning CVE-2026-21385
CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2026-21385 Qualcomm Multiple Chipsets Memory Corruption Vulnerability CVE-2026-22719 Broadcom VMware Aria Operations Command Injection Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to [xlite_meta score:51 src:CISA Alerts xlite_fp:32b5bedd7e6bf39d22e9734814d8743122d8c2f91d1ce220abff4089a8d644bd]
Google on Monday disclosed that a high-severity security flaw impacting an open-source Qualcomm component used in Android devices has been exploited in the wild. The vulnerability in question is CVE-2026-21385 (CVSS score: 7.8), a buffer over-read in the Graphics component. "Memory corruption when adding user-supplied data without checking available buffer space," Qualcomm said in an advisory, [xlite_meta score:53 src:The Hacker News xlite_fp:fab28c7810be80cbcd6ecf0593168e6e8cc61f9b259c4d5ac1c06abdef9e7566]
All References (3)
Quick Facts
Known Threat Actors
Related CVEs (CWE-190)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-21385 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1