CVE-2021-35094

Local authorization bypass via expired identity credential

Published Jun 14, 2022 · Updated Aug 4, 2024

Improper authentication in Qualcomm Snapdragon identity credential allows local users to gain invalid HLOS authorization. The closed-source component accepts a timeout-based identity credential without correctly verifying whether its authentication remains valid. Low-privileged local access is required, but Qualcomm has not disclosed which HLOS resources or operations the invalid authorization exposes.

CVSS severity7.8
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Qualcomm Snapdragon identity credential allows local users to gain invalid HLOS authorization. The closed-source component accepts a timeout-based identity credential without correctly verifying whether its authentication remains valid. Low-privileged local access is required, but Qualcomm has not disclosed which HLOS resources or operations the invalid authorization exposes.

The record

CVE
CVE-2021-35094
Published
Jun 14, 2022
Updated
Aug 4, 2024
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-287
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=AQT1000, QCA6390, QCA6391, QCA6420, QCA6421, QCA6426, QCA6430, QCA6431, QCA6436, QCA6574, QCA6574A, QCA6574AU, QCA6595AU, QCA6696, QCM2290, QCM4290, QCM6490, QCS2290, QCS4290, QCS6490, QSM8350, SA6155, SA6155P, SA8155, SA8155P, SA8195P, SA8540P, SA9000P, SD 675, SD 8cx Gen3, SD460, SD480, SD662, SD665, SD675, SD678, SD680, SD690 5G, SD695, SD720G, SD730, SD750G, SD765, SD765G, SD768G, SD778G, SD780G, SD855, SD865 5G, SD870, SD888 5G, SDX50M, SDX55M, SDXR2 5G, SM4125, SM6250, SM7250P, SM7325P, WCD9341, WCD9370, WCD9375, WCD9380, WCD9385, WCN3910, WCN3950, WCN3980, WCN3988, WCN3991, WCN3998, WCN6740, WCN6750, WCN6850, WCN6851, WCN6855, WCN6856, WCN7850, WCN7851, WSA8810, WSA8815, WSA8830, WSA8835

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Qualcomm · Snapdragonversion=AQT1000, QCA6390, QCA6391, QCA6420, QCA6421, QCA6426, QCA6430, QCA6431, QCA6436, QCA6574, QCA6574A, QCA6574AU, QCA6595AU, QCA6696, QCM2290, QCM4290, QCM6490, QCS2290, QCS4290, QCS6490, QSM8350, SA6155, SA6155P, SA8155, SA8155P, SA8195P, SA8540P, SA9000P, SD 675, SD 8cx Gen3, SD460, SD480, SD662, SD665, SD675, SD678, SD680, SD690 5G, SD695, SD720G, SD730, SD750G, SD765, SD765G, SD768G, SD778G, SD780G, SD855, SD865 5G, SD870, SD888 5G, SDX50M, SDX55M, SDXR2 5G, SM4125, SM6250, SM7250P, SM7325P, WCD9341, WCD9370, WCD9375, WCD9380, WCD9385, WCN3910, WCN3950, WCN3980, WCN3988, WCN3991, WCN3998, WCN6740, WCN6750, WCN6850, WCN6851, WCN6855, WCN6856, WCN7850, WCN7851, WSA8810, WSA8815, WSA8830, WSA8835

Published CVSS scores

7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2NVDAV:L/AC:L/Au:N/C:C/I:C/A:C

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication

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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