USN-8068-1 (UBUNTU-CVE-2025-31648)
Vulnerability from osv_ubuntu – Published: 2026-03-03 14:03 – Updated: 2026-06-25 10:47 – Source website
VLAI
Summary
intel-microcode vulnerability
Details
Sergiu Ghetie discovered that some Intel® processors did not properly handle values in the microcode flow. A local authenticated user could potentially use this issue to escalate their privileges.
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2025-31648",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
"type": "CVSS_V4"
},
{
"score": "low",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "intel-microcode",
"binary_version": "3.20260210.0ubuntu0.16.04.1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "intel-microcode",
"purl": "pkg:deb/ubuntu/intel-microcode@3.20260210.0ubuntu0.16.04.1+esm1?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
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{
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},
{
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}
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}
],
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"3.20151106.1",
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"3.20250812.0ubuntu0.16.04.1+esm1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2025-31648",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
"type": "CVSS_V4"
},
{
"score": "low",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "intel-microcode",
"binary_version": "3.20260210.0ubuntu0.18.04.1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "intel-microcode",
"purl": "pkg:deb/ubuntu/intel-microcode@3.20260210.0ubuntu0.18.04.1+esm1?arch=source\u0026distro=esm-infra/bionic"
},
"ranges": [
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]
},
{
"database_specific": {
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{
"id": "CVE-2025-31648",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
"type": "CVSS_V4"
},
{
"score": "low",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:20.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "intel-microcode",
"binary_version": "3.20260210.0ubuntu0.20.04.1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "intel-microcode",
"purl": "pkg:deb/ubuntu/intel-microcode@3.20260210.0ubuntu0.20.04.1+esm1?arch=source\u0026distro=esm-infra/focal"
},
"ranges": [
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{
"database_specific": {
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{
"id": "CVE-2025-31648",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
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{
"score": "CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
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},
{
"score": "low",
"type": "Ubuntu"
}
]
}
],
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}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
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}
]
},
"package": {
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"id": "CVE-2025-31648",
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"type": "Ubuntu"
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}
],
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}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
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}
]
},
"package": {
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{
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{
"id": "CVE-2025-31648",
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{
"score": "low",
"type": "Ubuntu"
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}
],
"ecosystem": "Ubuntu:25.10"
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},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "intel-microcode",
"binary_version": "3.20260210.0ubuntu0.25.10.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
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},
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]
}
],
"aliases": [],
"details": "Sergiu Ghetie discovered that some Intel\u00ae processors did not properly\nhandle values in the microcode flow. A local authenticated user could\npotentially use this issue to escalate their privileges.",
"id": "USN-8068-1",
"modified": "2026-06-25T10:47:32Z",
"published": "2026-03-03T14:03:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8068-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-31648"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "intel-microcode vulnerability",
"upstream": [
"UBUNTU-CVE-2025-31648"
]
}
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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.
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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.
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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.
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