CVE-2026-55285

Local privilege escalation via unchecked channel data

Published Sep 8, 2026 · Updated Sep 8, 2026

Out-of-bounds write in Android 16, 16 QPR2, and 17 allows local users to elevate privileges through openLogicalChannel. The openLogicalChannel implementations in multiple System-component files process channel data without the required bounds check, allowing a write beyond the destination buffer. A low-privileged local user can trigger the flaw without user interaction and gain higher privileges, affecting device confidentiality, integrity, and availability.

CVSS severity7.8
High
EPSS probability0.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in Android 16, 16 QPR2, and 17 allows local users to elevate privileges through openLogicalChannel. The openLogicalChannel implementations in multiple System-component files process channel data without the required bounds check, allowing a write beyond the destination buffer. A low-privileged local user can trigger the flaw without user interaction and gain higher privileges, affecting device confidentiality, integrity, and availability.

The record

CVE
CVE-2026-55285
Published
Sep 8, 2026
Updated
Sep 8, 2026
Vendor
Google Cloud
Product
Android
Classifications
CWE-120, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=16
  2. Affected versionversion=16-qpr2
  3. Affected versionversion=17

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Google Cloud · Androidversion=16; version=16-qpr2; version=17

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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