CVE-2024-21950

Memory disclosure or availability loss via out-of-bounds read

Published May 15, 2026 · Updated May 15, 2026

Out-of-bounds read in AMD Instinct MI300-series remote management firmware allows privileged local users to expose memory or impair availability. The immutable, factory-locked BL0 firmware reads a limited section beyond its established bounds; AMD has not disclosed the triggering input or exact operation. Exploitation requires high local privileges and high attack complexity, and AMD states that the firmware contains no GPU data.

CVSS severity1.8
Low
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in AMD Instinct MI300-series remote management firmware allows privileged local users to expose memory or impair availability. The immutable, factory-locked BL0 firmware reads a limited section beyond its established bounds; AMD has not disclosed the triggering input or exact operation. Exploitation requires high local privileges and high attack complexity, and AMD states that the firmware contains no GPU data.

The record

CVE
CVE-2024-21950
Published
May 15, 2026
Updated
May 15, 2026
Vendor
Advanced Micro Devices, Inc.
Product
AMD Instinct™ MI300A
Classifications
CWE-125, CAPEC-540
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. May 15, 2026CVE publishedPublication date reported by the CVE source.
  2. May 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Advanced Micro Devices, Inc. · AMD Instinct™ MI300AAffected versions are unavailable in this record.
Advanced Micro Devices, Inc. · AMD Instinct MI308XAffected versions are unavailable in this record.
Advanced Micro Devices, Inc. · AMD Instinct MI325XAffected versions are unavailable in this record.
Advanced Micro Devices, Inc. · AMD Instinct™ MI300XAffected versions are unavailable in this record.

Published CVSS scores

1.8Advanced Micro DevicesCVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
CAPEC-540Overread Buffers

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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