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Apq8017 Firmware CVE-2021-1936

HIGH
NULL Pointer Dereference (CWE-476)
2021-10-20 product-security@qualcomm.com
Denial Of Service Null Pointer Dereference Qualcomm Apq8017 Firmware Apq8064au Firmware Aqt1000 Firmware Msm8996au Firmware Pm8937 Firmware Qca6310 Firmware Qca6320 Firmware Qca6335 Firmware Qca6391 Firmware Qca6420 Firmware Qca6421 Firmware Qca6426 Firmware Qca6430 Firmware Qca6431 Firmware Qca6436 Firmware Qca6564 Firmware Qca6564a Firmware Qca6564au Firmware Qca6574 Firmware Qca6574a Firmware Qca6574au Firmware Qca6595 Firmware Qca6595au Firmware Qca6696 Firmware Qcm2290 Firmware Qcm4290 Firmware Qcm6125 Firmware Qcm6490 Firmware Qcs2290 Firmware Qcs4290 Firmware Qcs610 Firmware Qcs6125 Firmware Qcs6490 Firmware Sa6145p Firmware Sa6150p Firmware Sa6155 Firmware Sa6155p Firmware Sa8145p Firmware Sa8150p Firmware Sa8155 Firmware Sa8155p Firmware Sa8195p Firmware Sd 455 Firmware Sd 675 Firmware Sd460 Firmware Sd662 Firmware Sd675 Firmware Sd730 Firmware Sd855 Firmware Sd865 5g Firmware Sd888 Firmware Sdm429w Firmware Sdx55 Firmware Sm4125 Firmware Sm6250 Firmware Sm6250p Firmware Wcd9370 Firmware Wcd9371 Firmware Wcd9375 Firmware Wcd9380 Firmware Wcd9385 Firmware Wcn3610 Firmware Wcn3615 Firmware Wcn3620 Firmware Wcn3660 Firmware Wcn3660b Firmware Wcn3680 Firmware Wcn3680b Firmware Wcn3910 Firmware Wcn3950 Firmware Wcn3988 Firmware Wcn6740 Firmware Wsa8830 Firmware Wsa8835 Firmware Msm8909W Firmware Wcn6750 Firmware Wcn6855 Firmware Wcn6856 Firmware Apq8096Au Firmware Sdm630 Firmware Msm8917 Firmware Msm8937 Firmware Sd210 Firmware Sd205 Firmware Sd450 Firmware Sd845 Firmware Sd 636 Firmware Qcs605 Firmware Apq8053 Firmware Msm8953 Firmware Qca6390 Firmware Sdx55M Firmware Sm7250 Firmware Apq8009W Firmware Qcs603 Firmware Sda429W Firmware Sdw2500 Firmware Sdx50M Firmware Sd429 Firmware Sd439 Firmware Sd665 Firmware Sd690 5G Firmware Sd720G Firmware Sd750G Firmware Sd765 Firmware Sd765G Firmware Sd768G Firmware Sd888 5G Firmware Sdxr1 Firmware Sdxr2 5G Firmware Wcn3991 Firmware Wcn3998 Firmware Wcn6850 Firmware Wcn6851 Firmware Qualcomm215 Firmware Sd632 Firmware Sd678 Firmware Sd870 Firmware Sd480 Firmware Sd778G Firmware Sd780G Firmware Sm7325 Firmware
7.5
CVSS 3.1 · Vendor: qualcomm
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A10:2025 - Mishandling of Exceptional Conditions
ASVS 5.0
V16 - Security Logging and Error Handling Null pointer safety, defensive checks
MITRE ATT&CK

1 technique across 1 tactic: Impact

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.

Exploit ScenarioDerived

A remote attacker could crash the application by dereferencing a null pointer by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.6% exploitation probability (EPSS)

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AnalysisAI

Null pointer dereference can occur due to lack of null check for user provided input in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Check pointers before dereferencing. Use static analysis tools to detect null pointer paths.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as NULL Pointer Dereference (CWE-476), which allows attackers to crash the application by dereferencing a null pointer. Null pointer dereference can occur due to lack of null check for user provided input in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Wearables Affected products include: Qualcomm Apq8009W Firmware, Qualcomm Apq8017 Firmware, Qualcomm Apq8053 Firmware, Qualcomm Apq8064Au Firmware, Qualcomm Apq8096Au Firmware.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (qualcomm) PRIMARY 7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from Vendor (qualcomm) · only source for this CVE.

CVSS VectorVendor: qualcomm

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

DescriptionCVE.org

Null pointer dereference can occur due to lack of null check for user provided input in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Wearables

Threat Intelligence Overview

EPSS Score
0.6%
Top 56% exploitable
Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.6%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A null pointer dereference occurs when a program attempts to access memory through a pointer that has been set to NULL (address 0x0).

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:o:qualcomm:apq8009w_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:apq8017_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:apq8053_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:apq8064au_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:apq8096au_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:aqt1000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:msm8909w_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:msm8917_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:msm8937_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:msm8953_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:msm8996au_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:pm8937_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6310_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6320_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6335_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6390_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6391_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6420_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6421_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6426_firmware:-:*:*:*:*:*:*:*
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