High Access control

CVE-2024-36323 — Improper Access Control in AMD AMD Instinct™ MI300A

Improper isolation of VCN-JPEG HW register space could allow a malicious Guest Virtual Machine (VM) or a process to perform unauthorized access to the register space of the JPEG cores assigned a victim VM/process, potentially gaining arbitrary read/write access to the victim VM/process data.

Published May 15, 2026 · Updated Oct 13, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: AMD

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.1% (30-day exploitation probability)+0
Technical severity (high)+6

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.1%

ahead of 1% of scored CVEs · Oct 14, 2026

Affects

AMD

AMD Instinct™ MI300A and 5 more

CVSS base

8.8

High · 2 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

None

none · proof-of-concept · active

Automatable

can an attacker script the kill-chain steps

Technical impact

Total

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (AMD AMD Instinct™ MI300A, AMD AMD Instinct™ MI300X, AMD AMD Instinct™ MI308X…).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes matching the vulnerability class (access control), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
AMD	AMD Instinct™ MI300A	versions not specified by the source	Vulnerable	CVE Program (cve.org) e CISA ADP
AMD	AMD Instinct™ MI300X	versions not specified by the source	Vulnerable	CVE Program (cve.org) e CISA ADP
AMD	AMD Instinct™ MI308X	versions not specified by the source	Vulnerable	CVE Program (cve.org) e CISA ADP
AMD	AMD Instinct™ MI325X	versions not specified by the source	Vulnerable	CVE Program (cve.org) e CISA ADP
AMD	AMD Radeon™ PRO W7000 Series Graphics Products	versions not specified by the source	Vulnerable	CVE Program (cve.org) e CISA ADP
AMD	AMD Radeon™ RX 7000 Series Graphics Products	versions not specified by the source	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Local

Attack complexity

Low

Attack requirements

Present

Privileges required

Low

User interaction

None

Scope

Confidentiality (vulnerable system)

High

Integrity (vulnerable system)

High

Availability (vulnerable system)

High

Confidentiality (subsequent)

High

Integrity (subsequent)

High

Availability (subsequent)

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
8.8	CVSS 4.0	High	—	—	psirt@amd.com via NIST National Vulnerability Database
8.8	CVSS 4.0	High	—	—	AMD via CVE Program (cve.org) e CISA ADP

CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

(score shown at the top: psirt@amd.com)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-284 · Improper Access Control

Other CVEs with this weakness →

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 0.10%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.
Audit administrative actions and access to resources outside each user’s normal pattern.

endpoint telemetry (EDR)authentication logsapplication logs

Timeline

What happened to this CVE, newest first.

2026
Affected products added · amd/amd radeon™ rx 7000 series graphics products, amd/amd radeon™ pro w7000 series graphics products, amd/amd instinct™
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
SSVC assessment updated
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 13, 2026
CVSS changed · 8.8
Oct 13, 2026 · NIST National Vulnerability Database
Source status changed · → Awaiting Analysis
Oct 13, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 13, 2026 · NIST National Vulnerability Database
CVE published
May 15, 2026 · AMD

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

1 on the record

www.amd.com/en/resources/product-security/bulletin/AMD-SB-6027.html
NIST National Vulnerability Database

Elsewhere on this site

AMD
every CVE for this vendor

Access control
same class

CWE-284
other pages naming this weakness

Related CVEs (same products)

High CVE-2026-43598 Untrusted Pointer Dereference in AMD AMD Instinct™ MI210 9d
High CVE-2021-46747 Insufficient granularity of access control in ASP (AMD Secure Processor) may allow an… Jun 1, 2026
Critical CVE-2026-0481 Unrestricted IP address binding in the AMD Device Metrics Exporter (ROCm ecosystem)… May 15, 2026
High CVE-2024-36333 Uncontrolled Search Path Element in AMD Radeon Software May 15, 2026
High CVE-2024-36334 Improper Verification of Cryptographic Signature in AMD AMD Radeon™ RX 7000 Series Graphics Products May 15, 2026
Low CVE-2025-52532 A race condition in the MxGPU-Virtualization driver’s ioctl path caused by concurrent... May 15, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No fixed version, patch or mitigation documented.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2024-36323 is "Improper Access Control in AMD AMD Instinct™ MI300A", rated High. It affects AMD Instinct™ MI300A (AMD); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 8.8 describes technical severity. EPSS 0.10% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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