CVE-2022-32591Public exploitNetwork attack vector

Cellular service interruption via malformed SMS length

Published Oct 7, 2022 · Updated Aug 3, 2024

Improper input validation in MediaTek RIL on Android 11.0 and 12.0 allows remote attackers to crash cellular service via a crafted SMS. The Radio Interface Layer fails to reject a GSM 7-bit SMS whose signaled user-data length is smaller than its body, then crashes while handling it. No privileges or user interaction are required; delivery depends on carrier validation, and the resulting modem restart interrupts cellular connectivity.

CVSS severity7.5
High
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in MediaTek RIL on Android 11.0 and 12.0 allows remote attackers to crash cellular service via a crafted SMS. The Radio Interface Layer fails to reject a GSM 7-bit SMS whose signaled user-data length is smaller than its body, then crashes while handling it. No privileges or user interaction are required; delivery depends on carrier validation, and the resulting modem restart interrupts cellular connectivity.

The record

CVE
CVE-2022-32591
Published
Oct 7, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 7, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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