Improper Input Validation in Services
Information disclosure in Core services while processing a Diag command.
- Published
- Jan 2, 2024
- Updated
- Jun 17, 2026
- EPSS
- 0.2% · 7th percentile
- CWE
- CWE-20
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Report tools
Action score
27
Monitor
Low priority for now.
- CVSS
- 27 / 40 · 6.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 6.8
- CNA · qualcomm
- 7.6
- 0.8 point gap
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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 | ar8035 firmware | cpe:2.3:o:qualcomm:ar8035_firmware |
| qualcomm | ar8035 | cpe:2.3:h:qualcomm:ar8035 |
| qualcomm | fastconnect 6700 | cpe:2.3:h:qualcomm:fastconnect_6700 |
| qualcomm | fastconnect 6700 firmware | cpe:2.3:o:qualcomm:fastconnect_6700_firmware |
| qualcomm | fastconnect 6900 firmware | cpe:2.3:o:qualcomm:fastconnect_6900_firmware |
| qualcomm | fastconnect 6900 | cpe:2.3:h:qualcomm:fastconnect_6900 |
| qualcomm | fastconnect 7800 firmware | cpe:2.3:o:qualcomm:fastconnect_7800_firmware |
| qualcomm | fastconnect 7800 | cpe:2.3:h:qualcomm:fastconnect_7800 |
| qualcomm | qam8255p firmware | cpe:2.3:o:qualcomm:qam8255p_firmware |
| qualcomm | qam8255p | cpe:2.3:h:qualcomm:qam8255p |
| qualcomm | qam8650p firmware | cpe:2.3:o:qualcomm:qam8650p_firmware |
| qualcomm | qam8650p | cpe:2.3:h:qualcomm:qam8650p |
and 62 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- qualcomm ar8035 firmwareall versions
- qualcomm fastconnect 6700all versions
- qualcomm fastconnect 6900 firmwareall versions
- qualcomm fastconnect 7800 firmwareall versions
- qualcomm qam8255p firmwareall versions
- qualcomm qam8650p firmwareall versions
- qualcomm qam8775p firmwareall versions
- qualcomm qca6595 firmwareall versions
- qualcomm qca6595au firmwareall versions
- qualcomm qca6698aq firmwareall versions
- qualcomm qca6797aq firmwareall versions
- qualcomm qca8081 firmwareall versions
- qualcomm qca8337 firmwareall versions
- qualcomm qcm4490 firmwareall versions
- qualcomm qcn6024 firmwareall versions
- qualcomm qcn9024 firmwareall versions
- qualcomm qcs4490 firmwareall versions
- qualcomm qcs8550 firmwareall versions
- qualcomm sa8255p firmwareall versions
- qualcomm sm4450 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
- AR8035, FastConnect 6700, FastConnect 6900, FastConnect 7800, QAM8255P, QAM8650P, QAM8775P, QCA6595, QCA6595AU, QCA6698AQ, QCA6797AQ, QCA8081 … (+25)affected
Same product
qualcomm: all recordsOther highest-scoring records for the same primary product.
- CVE-2023-33106Use of Out-of-range Pointer Offset in GraphicsKEV61This week
- CVE-2024-49839Buffer Over-read in WLAN Host Cmn39Monitor
- CVE-2024-45569Improper Validation of Array Index in WLAN Host Communication39Monitor
- CVE-2024-21480Buffer Copy Without Checking Size of Input (`Classic Buffer Overflow`) in Audio39Monitor
- CVE-2024-21473Improper Input Validation in WIN SON39Monitor
- CVE-2024-21463Buffer Copy Without Checking Size of Input in Audio39Monitor
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.
- CVE-2024-2147390 days apartImproper Input Validation in WIN SON39Monitor
- CVE-2023-2857456 days apartImproper Input Validation in Core31Monitor
- CVE-2023-2485391 days apartImproper Input Validation in HLOS31Monitor
- CVE-2023-21656210 days apartImproper Input Validation in WLAN HOST31Monitor
- CVE-2024-49844490 days apartImproper Input Validation in Automotive31Monitor
- CVE-2023-3310362 days apartImproper Input Validation in Multi-Mode Call Processor30Monitor
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
- Physical access to the device is required.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Physical
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-20 · Improper Input ValidationCVSS vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; 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 helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.