CVE-2022-20453

SIM recognition denial via unchecked MMS path

Published Nov 8, 2022 · Updated May 1, 2025

Path traversal in Android 10 through 13 allows local users to interrupt SIM recognition through a crafted MMS part path. MmsProvider.update concatenates an untrusted URI path segment to the MMS parts directory and passes the unchecked path to chmod, allowing traversal outside that directory. Exploitation requires user interaction but no additional execution privileges, and the resulting permission change denies local SIM recognition.

CVSS severity5.5
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Android 10 through 13 allows local users to interrupt SIM recognition through a crafted MMS part path. MmsProvider.update concatenates an untrusted URI path segment to the MMS parts directory and passes the unchecked path to chmod, allowing traversal outside that directory. Exploitation requires user interaction but no additional execution privileges, and the resulting permission change denies local SIM recognition.

The record

CVE
CVE-2022-20453
Published
Nov 8, 2022
Updated
May 1, 2025
Vendor
Google Cloud
Product
Android
Classifications
CWE-22, CAPEC-126, T1642
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 8, 2022CVE publishedPublication date reported by the CVE source.
  2. May 1, 2025Record 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=Android-10 Android-11 Android-12 Android-12L Android-13

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Google Cloud · Androidversion=Android-10 Android-11 Android-12 Android-12L Android-13

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CAPEC-126Path Traversal
T1642Endpoint Denial of Service

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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