CVE-2022-20210Network attack vector

Remote code execution via NAS message parsing

Published Jun 15, 2022 · Updated Aug 3, 2024

Improper NAS message parsing in Android SoC modems allows remote attackers to crash the modem or execute code through cellular signaling. The modem parses each new NAS message from the EMM into internal objects, but Google and Unisoc have not disclosed the defective operation. No authentication or user interaction is required; successful exploitation interrupts cellular service or runs code in the modem context.

CVSS severity9.8
Critical
EPSS probability4.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper NAS message parsing in Android SoC modems allows remote attackers to crash the modem or execute code through cellular signaling. The modem parses each new NAS message from the EMM into internal objects, but Google and Unisoc have not disclosed the defective operation. No authentication or user interaction is required; successful exploitation interrupts cellular service or runs code in the modem context.

The record

CVE
CVE-2022-20210
Published
Jun 15, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 15, 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

10.0NIST NVDAV:N/AC:L/Au:N/C:C/I:C/A:C
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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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