CVE-2026-88075

Executive Summary

CVE-2026-88075 is a SQL injection vulnerability (CWE-89) in Microsoft Configuration Manager that allows an authenticated, authorized attacker to elevate privileges over a network. The flaw carries a CVSS v3.1 base score of 8.8 (High) with high impact to confidentiality, integrity, and availability, and is rated Local privileges required but network attack vector, no user interaction. No public proof-of-concept, exploit code, or patch evidence exists at the time of writing; the vulnerability is considered unpatched based on tracked sources.

Technical Analysis

The vulnerability class is CWE-89, "Improper Neutralization of Special Elements used in an SQL Command," commonly referred to as SQL injection. Per the NVD description, the injection occurs in Microsoft Configuration Manager and results in privilege escalation permitting an authorized attacker to elevate privileges over a network. The affected component handles SQL commands, and the weakness is that user-controllable input is not properly neutralized before being incorporated into a SQL statement.

Key characteristics derivable from the supplied data:

• Attack vector is network (AV:N), meaning the malicious input can be delivered remotely rather than requiring local console access.
• Attack complexity is low (AC:L) and no user interaction is required (UI:N), indicating the exploit path does not depend on race conditions or tricking a separate victim.
• Privileges required are low/authorized level (PR:L), consistent with the description of an "authorized attacker" — the actor must already hold some valid access to the Configuration Manager environment.
• Scope is unchanged (S:U), and all three impact metrics are High (C:H/I:H/A:H), so successful exploitation can expose, alter, and disrupt the affected data and dependent services.

Configuration Manager (ConfigMgr, formerly SCCM) is a widely deployed enterprise management platform that provides software distribution, patch management, OS deployment, and remote administration across large fleets of Windows endpoints and servers. Because it aggregates administrative data and orchestrates actions on managed systems, its backing data stores and administrative services are high-value targets. A SQL injection in this product is significant because it can permit an already-authorized operator or low-privileged principal to read or manipulate data beyond their intended entitlement, effectively widening their administrative control over the managed estate.

Insufficient technical detail is available in the provided record to name specific functions, parameters, API paths, stored procedures, or SQL statements involved, and no such identifiers should be assumed. The precise injection point, whether it resides in an administrative console interface, a management point/HTTP service, or a database query layer, is not disclosed in the NVD entry. What can be stated with confidence is the vulnerability class and its consequence: unneutralized input reaching a SQL command, enabling privilege elevation for an authenticated network actor.

Exploitation Scenarios

No public PoC or exploit code is available, and the attack chain below is inferred strictly from the vulnerability class and the NVD description. It does not name any implementation-specific function, endpoint, or parameter, because none are provided.

1. Reconnaissance / target identification An attacker with some authorized presence in the environment (PR:L) identifies the Microsoft Configuration Manager deployment — for example a management point or administrative service reachable over the network. Using Shodan-style internet or internal reconnaissance (product/homepage indicators for Configuration Manager) the actor maps which hosts expose ConfigMgr services, then confirms which of those the actor's existing credentials permit interaction with.

2. Triggering the flaw The attacker supplies crafted input through an authenticated interface that is passed to a backend SQL command without adequate neutralization (CWE-89). Because the vulnerability is network-reachable (AV:N) with low complexity (AC:L) and no user interaction (UI:N), the actor can submit the malicious input directly. The "authorized attacker" qualifier means the actor must possess valid access sufficient to reach the vulnerable query path — this is not an unauthenticated pre-auth attack.

3. Payload / execution method (vulnerability-class level) At the class level, SQL injection is exercised by injecting SQL syntax into a value that the application concatenates into a query. Depending on how query results are surfaced and whether multiple statements or stacked queries are permitted, this can permit reading data outside the actor's authorization, modifying records, or altering control flow of the application's SQL logic. Because the record provides no query text, delimiters, or parameter names, no specific injection payload can be attributed to this CVE; the mechanism is described generically as improper neutralization of SQL special elements.

4. Post-exploitation impact The CVSS vector indicates high confidentiality, integrity, and availability impact with unchanged scope. Practically, a successful SQL injection in Configuration Manager can allow the attacker to elevate privileges within the management platform, exposing or altering administrative data and potentially enabling broader control over managed endpoints that the platform governs. Since scope is unchanged (S:U), the security authority of the vulnerable component is not modeled as crossing into a separate component, but the blast radius still extends to everything Configuration Manager administers.

Impact Assessment

CVE-2026-88075 scores 8.8 (High) under CVSS v3.1. The vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H breaks down as follows: network attack vector and low complexity make the flaw reachable and straightforward once valid access exists; PR:L and UI:N mean no victim interaction is needed and the attacker only needs some authorized credentials; scope unchanged constrains the modeled authority boundary; and the three High impact ratings mean sensitive data disclosure, data modification, and service disruption are all plausible outcomes.

Business impact centers on the trust and integrity of the enterprise management plane. Configuration Manager typically holds or brokers administrative control over large endpoint populations, so a privilege-escalation SQL injection inside it can undermine patch assurance, software distribution integrity, and configuration baselines. An attacker who elevates within ConfigMgr may be positioned to push or influence content to managed systems, though the supplied data does not confirm such downstream actions. Affected systems are those running Microsoft Configuration Manager; exact affected versions are not published in the provided record. Blast radius is a function of deployment size — a single ConfigMgr hierarchy can manage tens of thousands of endpoints, magnifying the operational significance of a management-plane compromise. No EPSS score is available from FIRST.org, and there is no evidence of exploitation in the wild or CISA KEV listing at this time, so near-term risk is driven by exposure and access rather than observed mass exploitation.

Detection Guidance

Detection should focus on anomalous SQL-syntax patterns and query-error indicators reaching Configuration Manager services, plus authentication-enabled injection attempts from authorized-but-unexpected principals.

Sigma Rule

title: Potential SQL Injection Attempt Against Microsoft Configuration Manager
id: 8f3c1b2a-5d4e-4a91-9f2b-7c6e1a0d3b45
status: experimental
description: Detects SQL injection-style patterns in requests targeting Microsoft Configuration Manager services, consistent with CVE-2026-88075 (CWE-89).
references:
  - https://nvd.nist.gov/vuln/detail/CVE-2026-88075
author: valtersit.com
date: 2026/01/01
logsource:
  category: webserver
  product: windows
detection:
  selection_sql_keywords:
    cs-uri-query|contains:
      - "' or "
      - "'or'1'='1"
      - "union select"
      - "select @@version"
      - "waitfor delay"
      - "';--"
      - "sleep("
  selection_cm_services:
    cs-uri-stem|contains:
      - "/ccm_"
      - "/sms_"
  condition: selection_sql_keywords
falsepositives:
  - Legitimate administrative queries containing SQL-like text
  - Security scanners and authorized penetration tests
level: high

YARA Rule

rule CVE_2026_88075_SQLi_Indicators
{
    meta:
        author      = "valtersit.com"
        description = "Detects common SQL injection payload patterns associated with CWE-89 exploitation attempts (CVE-2026-88075)"
        reference   = "https://nvd.nist.gov/vuln/detail/CVE-2026-88075"
        date        = "2026-01-01"
        severity    = "high"

    strings:
        $sqli1 = "' or '1'='1" nocase
        $sqli2 = "union select" nocase
        $sqli3 = "select @@version" nocase
        $sqli4 = "waitfor delay" nocase
        $sqli5 = "';--" nocase
        $sqli6 = "sleep(" nocase
        $sqli7 = "information_schema" nocase

    condition:
        any of them
}

Suricata IDS Rule

alert http any any -> any any (msg:"CVE-2026-88075 Potential SQL Injection Attempt Targeting Microsoft Configuration Manager"; flow:established,to_server; http.method; content:"GET" or content:"POST"; http.uri; pcre:"/(union[\s\+]+select|select[\s\+]+@@version|waitfor[\s\+]+delay|sleep\(|'\s*or\s*'1'='1|information_schema)/i"; classtype:web-application-attack; reference:cve,2026-88075; reference:url,nvd.nist.gov/vuln/detail/CVE-2026-88075; sid:202688075; rev:1;)

Elastic Detection

sequence by host.name with maxspan=5s
  [ network where network.protocol == "http" and
      (url.query : "*union select*" or url.query : "*select @@version*" or
       url.query : "*waitfor delay*" or url.query : "*information_schema*" or
       url.query : "*' or '1'='1*") ]

Splunk SPL Query

index=web OR index=proxy
(uri_query="*union*select*" OR uri_query="*select*@@version*" OR uri_query="*waitfor*delay*" OR uri_query="*information_schema*" OR uri_query="*sleep(*")
| eval risk="possible_sqli_cve_2026_88075"
| stats count min(_time) as first_seen max(_time) as last_seen by src_ip, dest_host, uri_path, uri_query, risk
| where count > 0
| sort - count

Wazuh OSSEC Rule

<group name="web,sql_injection,cve_2026_88075,">
  <rule id="202688075" level="12">
    <if_sid>31100,31101,31103,31104</if_sid>
    <match>union select|select @@version|waitfor delay|information_schema|' or '1'='1</match>
    <description>CVE-2026-88075: Possible SQL injection attempt against Microsoft Configuration Manager</description>
    <mitre>
      <id>T1190</id>
    </mitre>
    <group>cve_2026_88075,sql_injection,</group>
  </rule>
</group>

Mitigation & Patch Guidance

Patch confidence: 0/4 (UNPATCHED — no patch evidence from any tracked source).

1. Immediate mitigations

• Restrict network reachability of Configuration Manager management points, administrative services, and consoles to trusted management VLANs and jump hosts only; do not expose ConfigMgr services to untrusted networks.
• Enforce least privilege on ConfigMgr roles and accounts. Because the flaw requires an authorized attacker (PR:L), reducing the number of principals who can reach the vulnerable query path directly narrows the attack surface.
• Apply network segmentation and monitor for SQL-syntax patterns in requests to ConfigMgr services using the detection rules above.
• Enable detailed logging on Configuration Manager services and their backend database, and alert on SQL errors and anomalous query behavior from authorized accounts.

2. Patch/upgrade steps

• No fixed version is published in any tracked source at this time. Monitor Microsoft Security Response Center (MSRC) advisories and the Microsoft Configuration Manager release notes for an update addressing CVE-2026-88075.
• Once a vendor fix or updated build is released, validate it in a non-production hierarchy, then apply it to all site servers and management points in a maintenance window, and re-verify the exposure.

3. Long-term hardening

• Adopt parameterized queries and enforced input validation in any in-house integrations that interact with Configuration Manager data stores (aligning with CWE-89 remediation guidance).
• Continuously inventory and review authorized ConfigMgr principals and their effective permissions; remove standing high privilege where possible.
• Maintain an asset inventory of all ConfigMgr site systems to ensure future patches are applied promptly, and incorporate CVE monitoring for the product into vulnerability management workflows.

References

• NVD — CVE-2026-88075: https://nvd.nist.gov/vuln/detail/CVE-2026-88075
• CWE-89, Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection'): https://cwe.mitre.org/data/definitions/89.html
• MITRE ATT&CK T1190, Exploit Public-Facing Application: https://attack.mitre.org/techniques/T1190/
• Microsoft Security Response Center (MSRC) security update guide (monitor for a Configuration Manager advisory): https://msrc.microsoft.com/update-guide
• Microsoft Configuration Manager documentation and release notes: https://learn.microsoft.com/mem/configmgr/

No public PoC, exploit code, or exploit-in-the-wild activity is associated with CVE-2026-88075 in the available data, and the vulnerability is not listed in CISA KEV.