CVE-2026-55366 — CRITICAL (9.8)

Vulnerability Description

In IP Multimedia Subsystem, there is a possible authentication bypass due to a logic error in the code. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-693

References

https://source.android.com/docs/security/bulletin/pixel/2026/2026-09-01

FAQ

What is CVE-2026-55366?

CVE-2026-55366 is a vulnerability with a CVSS score of 9.8 (CRITICAL). In IP Multimedia Subsystem, there is a possible authentication bypass due to a logic error in the code. This could lead to remote escalation of privilege with no additional execution privileges needed...

How severe is CVE-2026-55366?

CVE-2026-55366 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-55366?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.