---
id: CVE-2026-21042
title: >-
  Out-of-bounds write in libsavsac.so prior to SMR Jul-2026 Release 1 allows
  remote attackers to execute arbitrary code.
summary: >-
  Out-of-bounds write in libsavsac.so prior to SMR Jul-2026 Release 1 allows
  remote attackers to execute arbitrary code.
severity: high
cvss: 8.7
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N'
cwe:
  - CWE-787
vendor: Samsung Mobile
product: Samsung Mobile Devices
affected:
  - devices (all versions)
published: '2026-07-10'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T05:17:20.337'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-21042'
references:
  - url: 'https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=07'
    label: mobile.security@samsung.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-07-10T00:00:00+00:00'
cvssSource: cna
epss: 0.00436
epssPercentile: 0.35218
ingestedAt: '2026-07-11T20:15:25.891Z'
---

## Overview

Out-of-bounds write in libsavsac.so prior to SMR Jul-2026 Release 1 allows remote attackers to execute arbitrary code.

## Remediation

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