CVE-2026-21736 (GCVE-0-2026-21736)
Vulnerability from cvelistv5 – Published: 2026-03-09 12:23 – Updated: 2026-03-09 16:06
VLAI
EPSS
VEX
Title
GPU DDK - Insufficient permission check in PhysmemWrapExtMem() when write attribute support enabled
Summary
Software installed and run as a non-privileged user may conduct improper GPU system calls to gain write permission to read-only wrapped user-mode memory.
This is caused by improper handling of the memory protections for the user-mode wrapped memory resource.
Severity
4.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-09 16:06 UTC
CWE
- CWE-280 - Improper Handling of Insufficient Permissions or Privileges
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Imagination Technologies | Graphics DDK |
Affected:
1.17 RTM
(custom)
Affected: 1.18 RTM (custom) Affected: 23.2 RTM (custom) Affected: 24.1 RTM , ≤ 25.1 RTM (custom) Unaffected: 25.2 RTM , ≤ 25.3 RTM (custom) Unaffected: 26.1 RTM (custom) |
guessed |
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 4.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-21736",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-09T16:06:38.819665Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-09T16:06:41.667Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"platforms": [
"Linux",
"Android"
],
"product": "Graphics DDK",
"vendor": "Imagination Technologies",
"versions": [
{
"status": "affected",
"version": "1.17 RTM",
"versionType": "custom"
},
{
"status": "affected",
"version": "1.18 RTM",
"versionType": "custom"
},
{
"status": "affected",
"version": "23.2 RTM",
"versionType": "custom"
},
{
"lessThanOrEqual": "25.1 RTM",
"status": "affected",
"version": "24.1 RTM",
"versionType": "custom"
},
{
"lessThanOrEqual": "25.3 RTM",
"status": "unaffected",
"version": "25.2 RTM",
"versionType": "custom"
},
{
"status": "unaffected",
"version": "26.1 RTM",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eSoftware installed and run as a non-privileged user may conduct improper GPU system calls to gain write permission to read-only wrapped user-mode memory.\u003c/p\u003e\u003cp\u003eThis is caused by improper handling of the memory\u0026nbsp;protections\u0026nbsp;for the user-mode wrapped memory resource.\u003c/p\u003e"
}
],
"value": "Software installed and run as a non-privileged user may conduct improper GPU system calls to gain write permission to read-only wrapped user-mode memory.\n\nThis is caused by improper handling of the memory\u00a0protections\u00a0for the user-mode wrapped memory resource."
}
],
"impacts": [
{
"capecId": "CAPEC-679",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-679: Exploitation of Improperly Configured or Implemented Memory Protections"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-280",
"description": "CWE-280: Improper Handling of Insufficient Permissions or Privileges",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-09T12:23:38.659Z",
"orgId": "367425dc-4d06-4041-9650-c2dc6aaa27ce",
"shortName": "imaginationtech"
},
"references": [
{
"url": "https://www.imaginationtech.com/gpu-driver-vulnerabilities/"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "GPU DDK - Insufficient permission check in PhysmemWrapExtMem() when write attribute support enabled",
"x_generator": {
"engine": "Vulnogram 0.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "367425dc-4d06-4041-9650-c2dc6aaa27ce",
"assignerShortName": "imaginationtech",
"cveId": "CVE-2026-21736",
"datePublished": "2026-03-09T12:23:38.659Z",
"dateReserved": "2026-01-05T11:57:27.258Z",
"dateUpdated": "2026-03-09T16:06:41.667Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-21736",
"date": "2026-09-16",
"epss": "0.00124",
"percentile": "0.02453"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-21736\",\"sourceIdentifier\":\"367425dc-4d06-4041-9650-c2dc6aaa27ce\",\"published\":\"2026-03-09T13:15:56.120\",\"lastModified\":\"2026-06-17T10:18:59.563\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Software installed and run as a non-privileged user may conduct improper GPU system calls to gain write permission to read-only wrapped user-mode memory.\\n\\nThis is caused by improper handling of the memory\u00a0protections\u00a0for the user-mode wrapped memory resource.\"},{\"lang\":\"es\",\"value\":\"Software instalado y ejecutado como un usuario no privilegiado puede realizar llamadas al sistema de GPU impropias para obtener permiso de escritura a memoria de modo de usuario encapsulada de solo lectura.\\n\\nEsto es causado por el manejo impropio de las protecciones de memoria para el recurso de memoria encapsulada de modo de usuario.\"}],\"affected\":[{\"source\":\"367425dc-4d06-4041-9650-c2dc6aaa27ce\",\"affectedData\":[{\"vendor\":\"Imagination Technologies\",\"product\":\"Graphics DDK\",\"defaultStatus\":\"unknown\",\"platforms\":[\"Linux\",\"Android\"],\"versions\":[{\"version\":\"1.17 RTM\",\"versionType\":\"custom\",\"status\":\"affected\"},{\"version\":\"1.18 RTM\",\"versionType\":\"custom\",\"status\":\"affected\"},{\"version\":\"23.2 RTM\",\"versionType\":\"custom\",\"status\":\"affected\"},{\"version\":\"24.1 RTM\",\"lessThanOrEqual\":\"25.1 RTM\",\"versionType\":\"custom\",\"status\":\"affected\"},{\"version\":\"25.2 RTM\",\"lessThanOrEqual\":\"25.3 RTM\",\"versionType\":\"custom\",\"status\":\"unaffected\"},{\"version\":\"26.1 RTM\",\"versionType\":\"custom\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N\",\"baseScore\":4.4,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.8,\"impactScore\":2.5}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-03-09T16:06:38.819665Z\",\"id\":\"CVE-2026-21736\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"367425dc-4d06-4041-9650-c2dc6aaa27ce\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-280\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:imaginationtech:ddk:25.1:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"27FDCFEF-64B2-4CE6-A22A-B87A827E288F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:imaginationtech:ddk:25.1:rtm2:*:*:*:*:*:*\",\"matchCriteriaId\":\"3421036F-348E-4FC2-9D25-E45C3463B23B\"}]}]}],\"references\":[{\"url\":\"https://www.imaginationtech.com/gpu-driver-vulnerabilities/\",\"source\":\"367425dc-4d06-4041-9650-c2dc6aaa27ce\",\"tags\":[\"Vendor Advisory\"]}]}}",
"redhat_vex": {
"current_release_date": "2026-03-27T08:05:56+00:00",
"cve": "CVE-2026-21736",
"id": "CVE-2026-21736",
"initial_release_date": "2026-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "GPU DDK - Insufficient permission check in PhysmemWrapExtMem() when write attribute support enabled",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-21736.json",
"version": "3"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.4, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"LOW\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-21736\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-03-09T16:06:38.819665Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-03-09T16:06:31.993Z\"}}], \"cna\": {\"title\": \"GPU DDK - Insufficient permission check in PhysmemWrapExtMem() when write attribute support enabled\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"impacts\": [{\"capecId\": \"CAPEC-679\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-679: Exploitation of Improperly Configured or Implemented Memory Protections\"}]}], \"affected\": [{\"vendor\": \"Imagination Technologies\", \"product\": \"Graphics DDK\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.17 RTM\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"1.18 RTM\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"23.2 RTM\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"24.1 RTM\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"25.1 RTM\"}, {\"status\": \"unaffected\", \"version\": \"25.2 RTM\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"25.3 RTM\"}, {\"status\": \"unaffected\", \"version\": \"26.1 RTM\", \"versionType\": \"custom\"}], \"platforms\": [\"Linux\", \"Android\"], \"defaultStatus\": \"unknown\"}], \"references\": [{\"url\": \"https://www.imaginationtech.com/gpu-driver-vulnerabilities/\"}], \"x_generator\": {\"engine\": \"Vulnogram 0.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Software installed and run as a non-privileged user may conduct improper GPU system calls to gain write permission to read-only wrapped user-mode memory.\\n\\nThis is caused by improper handling of the memory\\u00a0protections\\u00a0for the user-mode wrapped memory resource.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eSoftware installed and run as a non-privileged user may conduct improper GPU system calls to gain write permission to read-only wrapped user-mode memory.\u003c/p\u003e\u003cp\u003eThis is caused by improper handling of the memory\u0026nbsp;protections\u0026nbsp;for the user-mode wrapped memory resource.\u003c/p\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-280\", \"description\": \"CWE-280: Improper Handling of Insufficient Permissions or Privileges\"}]}], \"providerMetadata\": {\"orgId\": \"367425dc-4d06-4041-9650-c2dc6aaa27ce\", \"shortName\": \"imaginationtech\", \"dateUpdated\": \"2026-03-09T12:23:38.659Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-21736\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-03-09T16:06:41.667Z\", \"dateReserved\": \"2026-01-05T11:57:27.258Z\", \"assignerOrgId\": \"367425dc-4d06-4041-9650-c2dc6aaa27ce\", \"datePublished\": \"2026-03-09T12:23:38.659Z\", \"assignerShortName\": \"imaginationtech\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…