---
id: CVE-2026-55317
title: >-
  In printf of printf.c, there is a possible out-of-bounds write due to improper
  input validation
summary: >-
  In printf of printf.c, there is a possible out-of-bounds write due to improper
  input validation. This could lead to local escalation of privilege with System
  execution privileges needed. User interaction is not needed for exploitation.
severity: medium
cvss: 6.7
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-20
  - CWE-787
vendor: google
product: android
affected:
  - android
published: '2026-09-15'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T17:20:32.447'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-55317'
references:
  - url: 'https://source.android.com/docs/security/bulletin/pixel/2026/2026-09-01'
    label: dsap-vuln-management@google.com
tags:
  - nvd
  - cve.org
epss: 0.00075
epssPercentile: 0.00096
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-15T21:15:10.308591Z'
ingestedAt: '2026-09-15T18:41:59.176Z'
---

## Overview

In printf of printf.c, there is a possible out-of-bounds write due to improper input validation. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

## Affected

- `android`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.