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    CVE-2026-57193

    Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, the LDAP realtime driver `res_config_ldap` may permit `LDAP filter injection` through a `SIP username`, allowing an unauthenticated attacker to make arbitrary LDAP queries using carefully crafted SIP packets and disclose information. The `res_config_ldap` module must be loaded and configured to access an LDAP server, which is not the default. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.

    Published:Oct 26, 2026
    Last Modified:Oct 27, 2026
    EPS:Oct 26, 2026
    EPSS Score:
    CVSS Score:6.9

    Affected Products

    Vendor
    Asterisk
    Product
    Asterisk
    Vendor
    Asterisk
    Product
    Certified Asterisk

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-676 NoSQL Injection

    Related CVEs

    CVE-2026-57184 (CVSS 6.3) — Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, …
    CVE-2026-57187 (CVSS 7.1) — Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, …
    CVE-2026-57196 (CVSS 2.3) — Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, …
    CVE-2026-23741 (CVSS 0) — Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.…
    CVE-2026-23740 (CVSS 0) — Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.…
    CVE-2026-23739 (CVSS 2) — Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.…
    CVE-2026-23738 (CVSS 3.5) — Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.…
    CVE-2025-69205 (CVSS 6.3) — Micro Registration Utility (µURU) is a telephone self registration utility based on asterisk. In versions up t…
    CVE-2025-1131 (CVSS 7) — A local privilege escalation vulnerability exists in the safe_asterisk script included with the Asterisk toolk…
    CVE-2025-57767 (CVSS 7.5) — Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.15.2, 21.10.2, …

    References

    https://github.com/asterisk/asterisk/commit/04aa482212e43b292817444eb4de35499f4b1568
    https://github.com/asterisk/asterisk/commit/14968f2f440ea0dd983caa4f477237a5224904dd
    https://github.com/asterisk/asterisk/commit/23c01b6d359c5d85da725beea89e394a6c031c5d
    https://github.com/asterisk/asterisk/commit/7e1ae09594a101950398cc6aff2dd2e5ab314884
    https://github.com/asterisk/asterisk/commit/8170a6bfa75994e7617a8b9d7fe7a7140b70cbe2
    https://github.com/asterisk/asterisk/commit/dd0c768d9e9678e4cb1ed95689a254a61452239b
    https://github.com/asterisk/asterisk/commit/ef280572a034cac3994075298facb1999778ee0d
    https://github.com/asterisk/asterisk/releases/tag/20.20.1
    https://github.com/asterisk/asterisk/releases/tag/21.12.3
    https://github.com/asterisk/asterisk/releases/tag/22.10.1
    https://github.com/asterisk/asterisk/releases/tag/23.4.1
    https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11
    https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3
    https://github.com/asterisk/asterisk/security/advisories/GHSA-r6c2-hwc2-j4mp
    https://github.com/asterisk/asterisk/tree/24.0.0-pre1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-57193 — Asterisk (Medium 6.9) | CVE-DB