---
title: "CVE-2026-21385: Qualcomm Multiple Chipsets Memory Corruption Vulnerability"
url: https://erroneo.us/security/cve/CVE-2026-21385/
description: "CVE-2026-21385 (Qualcomm Multiple Chipsets): Exploited in the wild (CISA KEV). Memory corruption while using alignments for memory allocation."
type: vulnerability-record
section: "Security Digest"
date_published: 2026-03-02
date_modified: 2026-03-04
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-21385"
kev: true
cvss: 7.8
epss: 0.01293
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-21385: Qualcomm Multiple Chipsets Memory Corruption Vulnerability

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run Qualcomm Multiple Chipsets. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2026-03-03, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2026-03-24 ; treat that as the outer limit, not the target.
- EPSS 1.3% , percentile 70: FIRST’s model estimates a 1.3% chance of exploitation activity in the next 30 days, higher than 70% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Needs local access needed. Lower urgency for most teams unless an attacker could already run code on the machine.

## What it is

Memory corruption while using alignments for memory allocation.

## Affected products (CVE record)

- Qualcomm, Inc. Snapdragon: 5G Fixed Wireless Access Platform, APQ8098, AR8031, AR8035, C-V2X 9150, CSRA6620, CSRA6640, FastConnect 6200, FastConnect 6700, FastConnect 6800, FastConnect 6900, FastConnect 7800

## Severity

- qualcomm CVSS 3.1: 7.8 `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: added 2026-03-03; federal due date 2026-03-24. Known ransomware use: Unknown.
- CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 1.29% probability of exploitation activity in the next 30 days; percentile 70.

## Sources

- [Listed in CISA KEV notes (source.android.com)](https://source.android.com/docs/security/bulletin/2026/2026-03-01)
- [CVE.org record CVE-2026-21385](https://www.cve.org/CVERecord?id=CVE-2026-21385)
- [NVD entry CVE-2026-21385](https://nvd.nist.gov/vuln/detail/CVE-2026-21385)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-21385)
- [docs.qualcomm.com](https://docs.qualcomm.com/product/publicresources/securitybulletin/march-2026-bulletin.html)

---
Source page: https://erroneo.us/security/cve/CVE-2026-21385/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt