What is CVE-2026-58704?

CVE-2026-58704 is a high-severity vulnerability in Google Android, classified under Improper Authorization. CVSS score: 8.8/10. Published 2026-09-15.

How severe is CVE-2026-58704?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2026-58704 known to be exploited?

Yes. CVE-2026-58704 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-09-16), indicating it is being actively exploited.

Auth bypass in Google Android

CVE-2026-58704

In Cellular Modem, there is a possible permission bypass due to a logic error in the code. This could lead to remote (proximal/adjacent) escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Published 2026-09-15 · last modified 2026-10-07.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (49.9th percentile), scored 2026-10-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

Google Android — versions Android kernel

Weakness classification (CWE)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2026-09-16. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2026-09-19.

Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

References

source.android.com/docs/security/bulletin/pixel/2026/2026-09-01 (Vendor Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2026-58704?: CVE-2026-58704 is a high-severity vulnerability in Google Android, classified under Improper Authorization. CVSS score: 8.8/10. Published 2026-09-15.
How severe is CVE-2026-58704?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2026-58704 known to be exploited?: Yes. CVE-2026-58704 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-09-16), indicating it is being actively exploited.