Improper validation of kernel buffer address while copying information back to user buffer can lead to kernel memory information exposure to
Improper validation of kernel buffer address while copying information back to user buffer can lead to kernel memory information exposure to user space in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for help- Published
- Oct 20, 2021
- Updated
- Jun 16, 2026
- EPSS
- 0.2% · 6th percentile
- CWE
- CWE-20
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Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CNA vs NVD score
- NVD
- 5.5
- CNA · qualcomm
- 6.2
- 0.7 point gap
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| qualcomm | aqt1000 firmware | cpe:2.3:o:qualcomm:aqt1000_firmware |
| qualcomm | aqt1000 | cpe:2.3:h:qualcomm:aqt1000 |
| qualcomm | ar8031 firmware | cpe:2.3:o:qualcomm:ar8031_firmware |
| qualcomm | ar8031 | cpe:2.3:h:qualcomm:ar8031 |
| qualcomm | ar8035 firmware | cpe:2.3:o:qualcomm:ar8035_firmware |
| qualcomm | ar8035 | cpe:2.3:h:qualcomm:ar8035 |
| qualcomm | csra6620 firmware | cpe:2.3:o:qualcomm:csra6620_firmware |
| qualcomm | csra6620 | cpe:2.3:h:qualcomm:csra6620 |
| qualcomm | csra6640 firmware | cpe:2.3:o:qualcomm:csra6640_firmware |
| qualcomm | csra6640 | cpe:2.3:h:qualcomm:csra6640 |
| qualcomm | fsm10055 firmware | cpe:2.3:o:qualcomm:fsm10055_firmware |
| qualcomm | fsm10055 | cpe:2.3:h:qualcomm:fsm10055 |
and 112 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- qualcomm aqt1000 firmwareall versions
- qualcomm ar8031 firmwareall versions
- qualcomm ar8035 firmwareall versions
- qualcomm csra6620 firmwareall versions
- qualcomm csra6640 firmwareall versions
- qualcomm fsm10055 firmwareall versions
- qualcomm fsm10056 firmwareall versions
- qualcomm mdm9150 firmwareall versions
- qualcomm qca6391 firmwareall versions
- qualcomm qca6420 firmwareall versions
- qualcomm qca6430 firmwareall versions
- qualcomm qca6574 firmwareall versions
- qualcomm qca6574a firmwareall versions
- qualcomm qca6574au firmwareall versions
- qualcomm qca6584au firmwareall versions
- qualcomm qca6595 firmwareall versions
- qualcomm qca6595au firmwareall versions
- qualcomm qca6696 firmwareall versions
- qualcomm qca8337 firmwareall versions
- qualcomm qcm6125 firmwareall versions
Versions reported by the vendor
Affected version ranges reported by the assigning authority (qualcomm). Independent of NVD's CPE analysis and usually ahead of it.
Qualcomm, Inc. Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables
- AQT1000, AR8031, AR8035, CSRA6620, CSRA6640, FSM10055, FSM10056, MDM9150, QCA6391, QCA6420, QCA6430, QCA6574, QCA6574A, QCA6574AU, QCA6584AU, QCA6595, QCA6595AU, QCA6696, QCA8337, QCM6125, QCS405, QCSaffected
Same product
qualcomm: all recordsOther highest-scoring records for the same primary product.
- CVE-2025-21479Incorrect Authorization in GraphicsKEV64This week
- CVE-2025-21480Incorrect Authorization in Graphics WindowsKEV64This week
- CVE-2021-1965Possible buffer overflow due to lack of parameter length check during MBSSID scan IE parse in Snapdragon Auto, Snapdragon Compute, Snapdrago40Plan
- CVE-2023-43548Buffer Copy Without Checking Size of Input in Video39Monitor
- CVE-2023-43519Buffer Copy without Checking Size of Input (`Classic Buffer Overflow`) in Video39Monitor
- CVE-2023-43518Untrusted Pointer Dereference in Video39Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-20 · Improper Input ValidationCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Server Side Include (SSI) InjectionCAPEC-101likelihood: High · High
- Cross Zone ScriptingCAPEC-104likelihood: Medium · High
- Command Line Execution through SQL InjectionCAPEC-108likelihood: Low · Very High
- Object Relational Mapping InjectionCAPEC-109likelihood: Low · High
- SQL Injection through SOAP Parameter TamperingCAPEC-110likelihood: High · Very High
- Double EncodingCAPEC-120likelihood: Low · Medium
- Subverting Environment Variable ValuesCAPEC-13likelihood: High · Very High
ATT&CK techniques
- Obfuscated Files or InformationT1027
- Masquerading: Invalid Code SignatureT1036.001
- Steal Web Session CookieT1539
- Subvert Trust Controls: Code SigningT1553.002
- Impair Defenses:Impair Command History LoggingT1562.003
- Hijack Execution Flow:Dynamic Linker HijackingT1574.006
- Hijack Execution Flow:Path Interception by PATH Environment VariableT1574.007
Change log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- packetstormsecurity.com/files/172856/Qualcomm-NPU-Use-After-Free-Information-Leak.html
- www.qualcomm.com/company/product-security/bulletins/october-2021-bulletin
Vendor advisories and official records. Exploit/PoC links are deliberately left out.