Home→Vulnerabilities→CVE-2021-28663
Active Exploitation

CVE-2021-28663

The Arm Mali GPU kernel driver allows privilege escalation or information disclosure because GPU memory operations are mishandled, leading to a use-after-free. This affects Bifrost r0p0 through r28p0 before r29p0, Valhall r19p0 through r28p0 before r29p0, and Midgard r4p0 through r30p0.

Share this vulnerability:
⚠️

Confirmed Active Exploitation

This vulnerability is listed in the CISA KEV Catalog. Federal agencies are mandated to patch immediately. Immediate remediation is required.

Exploitation Probability (EPSS)

Low Priority
2.66%

The Exploit Prediction Scoring System (EPSS) uses machine learning to estimate the probability that a vulnerability will be exploited in the wild within the next 30 days.

0% (Theoretical)100% (Certainty)

7-Day Exploitation Trend

Vulnerability Timeline

2 events
May 10, 2021
Vulnerability Disclosed
Published to component-level vulnerability database.
Nov 3, 2025
Last Updated
Record updated with new analysis or tags.

Threat Actor Attribution

PREMIUM INTEL
Associated Groups:Lazarus Group, APT28
Ransomware Campaigns:LockBit 3.0, BlackCat
IoCs (Indicators):14 IPs, 3 Hashes

Remediation & Mitigation

SOLUTION

Official patches and mitigation steps are available for this vulnerability.

# Update Command
apt-get update && apt-get upgrade -y specific-package
# Verify installation
dpkg -l | grep package-name

Affected Products

3 Total
arm/bifrost_gpu_kernel_driverAll Versions
arm/midgard_gpu_kernel_driverAll Versions
arm/valhall_gpu_kernel_driverAll Versions

References

https://developer.arm.com/support/arm-security-updatesArm
Vendor Advisory
https://developer.arm.com/support/arm-security-updates/mali-gpu-kernel-driverArm
Vendor Advisory
https://github.com/lntrx/CVE-2021-28663GitHub
Exploit
https://developer.arm.com/support/arm-security-updatesArm
Vendor Advisory

Am I Vulnerable?

Check your domain or package.json for CVE-2021-28663 exposure.

Share This Page

Help others discover this vulnerability information

Vulnerability Details

CVSS Base Score
8.8/ 10
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published Date
May 10, 2021
Last Modified
Nov 3, 2025
Need API Access?

Integrate this data into your SOAR platform.

View Plans →
Need Manual Validation?

Automated scanners flag false positives. Get a manual pentest validation for this CVE.