CVE-2026-58222
Raw vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSummary
CVE-2026-58222 is a high-severity LDAP Injection (CWE-90) vulnerability in Samba Active Directory (inferred from references). Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 45% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-51158
Vulnerability Data
A security flaw combining LDAP filter injection and improper authorization checks was found in Samba Active Directory Domain Controller (AD DC). When processing LDAP Compare requests, Samba fails to properly validate user-supplied attribute names and executes the resulting internal database…
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search in a trusted context, bypassing normal Access Control List (ACL) enforcement. An authenticated low-privilege domain user can exploit these flaws to disclose confidential Active Directory attributes that would normally be inaccessible. The disclosed information may be leveraged to derive sensitive authentication material, potentially leading to privilege escalation and complete domain compromise. For example: In deployments configured with Group Managed Service Accounts (gMSAs), an attacker can extract the "msKds-RootKeyData" attribute and derive gMSA passwords offline, potentially leading to complete domain compromise if privileged gMSAs are present.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V1.2.6
Mitigating Controls (NIST 800-53 r5) AI
Developer testing and evaluation can discover LDAP injection flaws through static analysis or crafted test cases.
Input validation directly stops untrusted data from reaching an LDAP query builder without neutralization of special characters.
Secure engineering principles require safe query construction and escaping that structurally prevents LDAP injection.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure SDLC practices directly require input neutralization and query parameterization to prevent LDAP injection.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing in development catches LDAP injection via dynamic analysis or fuzzing, but does not prevent it at the source.
Secure development lifecycle mandates input validation and query construction practices that directly prevent LDAP injection.
Application security requirements include explicit rules for safe construction of directory queries, mitigating LDAP injection.
Secure coding standards require proper neutralization of LDAP special characters, directly eliminating this weakness.
Secure architecture principles encourage safe query interfaces but do not prescribe the specific coding controls needed for LDAP injection.
Information access restriction limits who can query LDAP but does not address how queries are built.