CVE-2021-30328Network attack vector

Unauthenticated service interruption via invalid CSI-IM configuration

Published Apr 1, 2022 · Updated Aug 3, 2024

Reachable assertion in Qualcomm Snapdragon platforms allows remote attackers to interrupt service via an invalid NR CSI-IM configuration. The cellular modem resource-configuration path fails to reject invalid CSI-IM data and reaches an assertion during processing. No authentication or user interaction is required; the documented effect is limited to availability, with no reported data access or modification.

CVSS severity7.5

High

EPSS probability0.58%

Next 30 days · Sep 16, 2026

Known exploitationUnconfirmed

Based on sourced intelligence

Hinoki checkNot available

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Summary

What happened

The record

CVE: CVE-2021-30328
Published: Apr 1, 2022
Updated: Aug 3, 2024

Vendor: Qualcomm
Product: Snapdragon
Classifications: CWE-617, T1499

Attack vector: network
Privileges: unauthenticated

Timeline

How it unfolded

Apr 1, 2022CVE publishedPublication date reported by the CVE source.
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?

Compare these published version ranges with your installed build and any vendor patches.

Affected versionversion=AR8035, QCA6390, QCA6391, QCA6426, QCA6436, QCA6574A, QCA6574AU, QCA6595AU, QCA6696, QCA8081, QCA8337, QCX315, SA515M, SD 8 Gen1 5G, SD480, SD690 5G, SD750G, SD765, SD765G, SD768G, SD865 5G, SD870, SD888, SDX55, SDX55M, SDX65, SDXR2 5G, SM6375, SM7250P, SM7315, WCD9341, WCD9360, WCD9370, WCD9375, WCD9380, WCD9385, WCN3988, WCN3991, WCN3998, WCN6750, WCN6850, WCN6851, WCN6855, WCN6856, WSA8810, WSA8815, WSA8830, WSA8835

What conditions does exploitation require?

Attack vectornetwork

Required privilegesunauthenticated

What is affected?

Qualcomm · Snapdragonversion=AR8035, QCA6390, QCA6391, QCA6426, QCA6436, QCA6574A, QCA6574AU, QCA6595AU, QCA6696, QCA8081, QCA8337, QCX315, SA515M, SD 8 Gen1 5G, SD480, SD690 5G, SD750G, SD765, SD765G, SD768G, SD865 5G, SD870, SD888, SDX55, SDX55M, SDX65, SDXR2 5G, SM6375, SM7250P, SM7315, WCD9341, WCD9360, WCD9370, WCD9375, WCD9380, WCD9385, WCN3988, WCN3991, WCN3998, WCN6750, WCN6850, WCN6851, WCN6855, WCN6856, WSA8810, WSA8815, WSA8830, WSA8835

Published CVSS scores

7.8NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:C

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.5Qualcomm, Inc.CVSS: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.

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

CWE-617Reachable Assertion

T1499Endpoint Denial of Service

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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