CVE-2026-21522 describes an improper neutralization of special elements used in a command, known as command injection, within Microsoft Azure Compute Gallery. This vulnerability allows an authorized attacker to elevate privileges locally, potentially leading to unauthorized access and manipulation of system resources. The CVSS score for this vulnerability is 6.7, classified as medium severity, indicating a significant risk to organizations that utilize this service.
The risk to organizations includes the potential for unauthorized privilege escalation, which can lead to broader system compromises. Given its local attack vector and low attack complexity, this vulnerability could be exploited by attackers with high privileges, emphasizing the urgency for defenders to address it promptly.
Currently, there are no confirmed exploits available for CVE-2026-21522, but the possibility of exploitation cannot be ruled out. Organizations should prioritize patching to mitigate risks, as the impact on confidentiality, integrity, and availability is rated as high. It is crucial for organizations to act swiftly to protect their systems against potential exploitation.
Organizations should prioritize patching immediately.
Vulnerability Details
The CVE-2026-21522 vulnerability is characterized by improper neutralization of special elements used in commands, classified under CWE-77. This vulnerability specifically affects the Microsoft Azure Compute Gallery, particularly within the Azure CLI component, versions prior to 1.2.8. Published on February 10, 2026, it has undergone analysis and is currently marked as analyzed.
The CVSS version 3.1 score of 6.7 indicates a medium severity level, with a local attack vector and low complexity. Attackers require high privileges to exploit this vulnerability, and user interaction is not necessary. The potential impacts include high confidentiality, integrity, and availability risks.
Technical Analysis
The root cause of CVE-2026-21522 is the improper handling of command elements, which can lead to command injection vulnerabilities. Attackers may leverage this flaw to execute unauthorized commands within the Azure environment. The attack vector for this vulnerability is local, suggesting that the exploitation requires physical or remote access to the system.
The attack complexity is assessed as low, indicating that exploiting this vulnerability does not require advanced skills. High privileges are required for exploitation, limiting potential attackers to those with elevated access rights. Importantly, user interaction is not needed, enabling stealthy exploitation methods.
The vulnerability's impact on confidentiality, integrity, and availability is classified as high. Successful exploitation could allow attackers to manipulate data, disrupt services, and potentially escalate their privileges further within the system.
Risk & Impact Analysis
Organizations deploying Microsoft Azure Compute Gallery face significant risks due to this vulnerability. The potential for unauthorized privilege escalation means that attackers could gain access to sensitive data and system controls, leading to severe operational disruptions. The blast radius is substantial, as this vulnerability could affect not only individual systems but also interconnected services relying on Azure.
Given the CVSS score of 6.7 and the absence of known exploits in the wild, organizations should still treat this vulnerability with a sense of urgency. The risk of exploitation, particularly in environments with high-value assets, necessitates immediate attention and remediation. Organizations should address this vulnerability in their priority patch cycle.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected product is the Azure CLI component of Microsoft Azure Compute Gallery, specifically versions prior to 1.2.8. Organizations utilizing these versions must take immediate action to remediate this vulnerability.
Mitigation & Remediation
Organizations should prioritize patching immediately. Upgrade to the latest version of Azure CLI, specifically version 1.2.8 or later, to remediate this vulnerability. In addition, implementing strong configuration hardening practices can help mitigate the risks associated with command injection vulnerabilities.
Consider conducting a thorough security assessment and testing, such as application security assessment, to identify any similar vulnerabilities across your environment.
Detection Guidance
Organizations should monitor for suspicious command executions and privilege escalations within their Azure environments. Log indicators that may suggest exploitation of this vulnerability include abnormal access patterns and unauthorized changes to system configurations.
Behavioral anomalies, such as unexpected changes in user roles or privilege levels, should also be investigated thoroughly.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2026-21522 lies in the potential for command injection vulnerabilities to be exploited in cloud environments. This highlights the importance of maintaining rigorous coding standards and security practices in software development.
Security teams should take note of the trends associated with command injection vulnerabilities and ensure that their applications are regularly reviewed and tested for security weaknesses. For more insights, consider visiting our penetration testing methodology guide.
Organizations should also consider integrating continuous security testing into their development lifecycles to proactively identify and rectify vulnerabilities.
Lastly, leveraging services such as continuous penetration testing can help organizations stay ahead of emerging threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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