Quick answers
- Is CVE-2026-55366 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-55366 being exploited in the wild.
- How severe is CVE-2026-55366?
- Critical severity, with a CVSS score of 9.8, published 15 September 2026.
- Which products and versions are affected?
- Google Pixel prior to 2026-09-05 security patch level.
- Is there a fix for CVE-2026-55366?
- A patch was published on 2026-09-05. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-55366 attacked?
- It is attacked over the network, in device firmware.
- Am I affected by CVE-2026-55366?
- Check whether you run Google Android. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is an authentication bypass in the IP Multimedia Subsystem due to a logic error in the authentication code. The flaw allows remote attackers to escalate privileges without needing additional execution privileges or user interaction. The vulnerability is remotely exploitable over the network and affects the telephony/IMS stack on Google Pixel devices. Google issued a security patch with the 2026-09-05 patch level to address this issue.
Affected products
- Google Pixel prior to 2026-09-05 security patch level
Timeline
- 2026-09-15: disclosed
- 2026-09-05: patched