CVE-2026-21385
HighExploitedPublic exploitInteger Overflow or Wraparound in Graphics
Published Mar 2, 2026 · Updated Oct 14, 2026 · Also known as 4387106, A-478214401, ASB-A-478214401
Key Facts
Patch immediately- CVE-2026-21385 is a high-severity vulnerability (CVSS 7.8 v3.1) affecting 5g Fixed Wireless Access Platform Firmware (Qualcomm), Apq8098 Firmware (Qualcomm), Ar8031 Firmware (Qualcomm) and 22 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 2, 2026. Public exploit code is available.
- EPSS estimates a 1.3% probability of exploitation in the next 30 days.
- Fixed versions are available, including :linux_kernel:Qualcomm SoCVersion:2026-03-05, platform/vendor/qcom/opensource/graphics-kernel SoCVersion:2026-03-05.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
1.3%
Higher than 69.2% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2026-21385 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
Memory corruption while using alignments for memory allocation.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Mar 3, 2026 | Mar 24, 2026 | Not reported |
| Industry KEV feed | Mar 2, 2026 | Mar 24, 2026 | Not reported |
| CIRCL KEV | Mar 3, 2026 | Mar 24, 2026 | Not reported |
| ENISA EUVD | Mar 3, 2026 | n/a | Not reported |
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.
Affected Products
240 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| 5g Fixed Wireless Access Platform FirmwareQualcomm | See advisory | n/a |
| Apq8098 FirmwareQualcomm | See advisory | n/a |
| Ar8031 FirmwareQualcomm | See advisory | n/a |
| Ar8035 FirmwareQualcomm | See advisory | n/a |
| Csra6620 FirmwareQualcomm | See advisory | n/a |
Patched Releases
:linux_kernel:Qualcomm
SoCVersion:2026-03-05
platform/vendor/qcom/opensource/graphics-kernel
SoCVersion:2026-03-05
Timeline
Publicly disclosed
Mar 2, 2026
Added to Industry KEV feed
Mar 2, 2026
Added to CISA KEV
Mar 3, 2026
Added to CIRCL KEV
Mar 3, 2026
Added to ENISA EUVD
Mar 3, 2026
Last updated
Oct 14, 2026
Weakness Type
- CWE-190 Integer Overflow or Wraparound
References
- advisoryVulnCheck exploitation report
- advisoryhttps://source.android.com/security/bulletin/2026-03-01
- patchhttps://git.codelinaro.org/clo/la/kernel/msm-5.4/-/commit/2a3a06da63495bf6483d9d9969b4420f4f981c50
- patchhttps://git.codelinaro.org/clo/la/platform/vendor/qcom/opensource/graphics-kernel/-/commit/91a0db3aa438bffbd235df8301bf188dbab218b7
- exploitVulnCheck exploitation report
FAQ
Common Questions.
Memory corruption while using alignments for memory allocation.
Affected: 5g Fixed Wireless Access Platform Firmware (Qualcomm); Apq8098 Firmware (Qualcomm); Ar8031 Firmware (Qualcomm), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 2, 2026.
Yes. It was added on Mar 3, 2026 with a federal remediation due date of Mar 24, 2026.
Public exploit code is available.
Fixed versions are available, including :linux_kernel:Qualcomm SoCVersion:2026-03-05, platform/vendor/qcom/opensource/graphics-kernel SoCVersion:2026-03-05.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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