{
"document": {
"acknowledgments": [
{
"names": [
"Sagi Tzadik with Wiz"
]
}
],
"aggregate_severity": {
"namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system",
"text": "Important"
},
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"distribution": {
"text": "Public",
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "en-US",
"notes": [
{
"category": "general",
"text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
"title": "Additional Resources"
},
{
"category": "legal_disclaimer",
"text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
"title": "Disclaimer"
},
{
"category": "general",
"text": "Required. The vulnerability documented by this CVE requires customer action to resolve.",
"title": "Customer Action"
}
],
"publisher": {
"category": "vendor",
"contact_details": "secure@microsoft.com",
"name": "Microsoft Security Response Center",
"namespace": "https://msrc.microsoft.com"
},
"references": [
{
"category": "self",
"summary": "CVE-2026-26148 Microsoft Azure AD SSH Login extension for Linux Elevation of Privilege Vulnerability - HTML",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26148"
},
{
"category": "self",
"summary": "CVE-2026-26148 Microsoft Azure AD SSH Login extension for Linux Elevation of Privilege Vulnerability - CSAF",
"url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-26148.json"
},
{
"category": "external",
"summary": "Microsoft Exploitability Index",
"url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1"
},
{
"category": "external",
"summary": "Microsoft Support Lifecycle",
"url": "https://support.microsoft.com/lifecycle"
},
{
"category": "external",
"summary": "Common Vulnerability Scoring System",
"url": "https://www.first.org/cvss"
}
],
"title": "Microsoft Azure AD SSH Login extension for Linux Elevation of Privilege Vulnerability",
"tracking": {
"current_release_date": "2026-03-11T07:00:00.000Z",
"generator": {
"date": "2026-04-14T16:35:26.015Z",
"engine": {
"name": "MSRC Generator",
"version": "1.0"
}
},
"id": "msrc_CVE-2026-26148",
"initial_release_date": "2026-03-10T07:00:00.000Z",
"revision_history": [
{
"date": "2026-03-10T07:00:00.000Z",
"legacy_version": "1",
"number": "1",
"summary": "Information published."
},
{
"date": "2026-03-11T07:00:00.000Z",
"legacy_version": "1.1",
"number": "2",
"summary": "Acknowledgement Updated"
}
],
"status": "final",
"version": "2"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "<1.0.033370002",
"product": {
"name": "Microsoft Azure AD SSH Login extension for Linux <1.0.033370002",
"product_id": "1"
}
},
{
"category": "product_version",
"name": "1.0.033370002",
"product": {
"name": "Microsoft Azure AD SSH Login extension for Linux 1.0.033370002",
"product_id": "21024"
}
}
],
"category": "product_name",
"name": "Microsoft Azure AD SSH Login extension for Linux"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-26148",
"cwe": {
"id": "CWE-454",
"name": "External Initialization of Trusted Variables or Data Stores"
},
"notes": [
{
"category": "general",
"text": "Microsoft",
"title": "Assigning CNA"
},
{
"category": "faq",
"text": "Successful exploitation of this vulnerability requires an attacker to prepare the target environment to improve exploit reliability.",
"title": "According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?"
},
{
"category": "faq",
"text": "An unprivileged local user on an affected Azure Linux VM can obtain root privileges.",
"title": "How could an attacker exploit this vulnerability?"
},
{
"category": "faq",
"text": "Customers update the Azure AD SSH Login extension by using their Linux distribution’s package manager to install the latest version of the aadsshlogin package. Systems with the extension already installed have packages.microsoft.com configured automatically, so no additional setup is required. Depending on the Linux distribution, customers should run one of the following commands:\nUbuntu or Debian: sudo apt update aadsshlogin, RHEL-based distributions (RHEL, CentOS, Rocky Linux, AlmaLinux, Oracle Linux): sudo dnf update aadsshlogin, SUSE-based distributions (SLES, openSUSE): sudo zypper update aadsshlogin",
"title": "How can customers update the Microsoft Azure AD SSH Login extension for Linux?"
}
],
"product_status": {
"fixed": [
"21024"
],
"known_affected": [
"1"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-26148 Microsoft Azure AD SSH Login extension for Linux Elevation of Privilege Vulnerability - HTML",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26148"
},
{
"category": "self",
"summary": "CVE-2026-26148 Microsoft Azure AD SSH Login extension for Linux Elevation of Privilege Vulnerability - CSAF",
"url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-26148.json"
}
],
"remediations": [
{
"category": "vendor_fix",
"date": "2026-03-10T07:00:00.000Z",
"details": "1.0.033370002:Security Update:https://packages.microsoft.com/",
"product_ids": [
"1"
],
"url": "https://packages.microsoft.com/"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"environmentalsScore": 0.0,
"exploitCodeMaturity": "PROOF_OF_CONCEPT",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"remediationLevel": "OFFICIAL_FIX",
"reportConfidence": "CONFIRMED",
"scope": "CHANGED",
"temporalScore": 7.3,
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C",
"version": "3.1"
},
"products": [
"1"
]
}
],
"threats": [
{
"category": "impact",
"details": "Elevation of Privilege"
},
{
"category": "exploit_status",
"details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Unlikely"
}
],
"title": "Microsoft Azure AD SSH Login extension for Linux Elevation of Privilege Vulnerability"
}
]
}