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Msm8998 Firmware CVE-2020-3652

CRITICAL
Improper Input Validation (CWE-20)
2020-04-16 product-security@qualcomm.com
9.1
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V2 - Validation and Business Logic Input validation, allowlisting
Impact

CVSS score of 9.1 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the critical-severity affected system.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.9% exploitation probability (EPSS)

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AnalysisAI

Possible buffer over-read issue in windows x86 wlan driver function while processing beacon or request frame due to lack of check of length of variable received. Rated critical severity (CVSS 9.1), 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. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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 under CWE-20. Possible buffer over-read issue in windows x86 wlan driver function while processing beacon or request frame due to lack of check of length of variable received. in Snapdragon Compute, Snapdragon Connectivity in MSM8998, QCA6390, SC7180, SC8180X, SDM850 Affected products include: Qualcomm Msm8998 Firmware, Qualcomm Qca6390 Firmware, Qualcomm Sc7180 Firmware, Qualcomm Sc8180X Firmware, Qualcomm Sdm850 Firmware.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.1 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

DescriptionNVD

Possible buffer over-read issue in windows x86 wlan driver function while processing beacon or request frame due to lack of check of length of variable received. in Snapdragon Compute, Snapdragon Connectivity in MSM8998, QCA6390, SC7180, SC8180X, SDM850

Threat Intelligence Overview

EPSS Score
0.9%
Top 44% 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 CRITICAL
CISA KEV No
Public POC No
EPSS 0.9%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
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

47
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +46
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)NVD

cpe:2.3:o:qualcomm:msm8998_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6390_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sc7180_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sc8180x_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdm850_firmware:-:*:*:*:*:*:*:*
CVE-2020-11207 HIGH POC
7.8 Nov 12

Buffer overflow in LibFastCV library due to improper size checks with respect to buffer length' in Snapdragon Auto, Snap

CVE-2020-11206 HIGH POC
7.8 Nov 12

Possible buffer overflow in Fastrpc while handling received parameters due to lack of validation on input parameters' in

CVE-2020-11196 CRITICAL
9.8 Nov 12

u'Integer overflow to buffer overflow occurs while playback of ASF clip having unexpected number of codec entries' in Sn

CVE-2020-11193 CRITICAL
9.8 Nov 12

u'Buffer over read can happen while parsing mkv clip due to improper typecasting of data returned from atomsize' in Snap

CVE-2020-3654 CRITICAL
9.8 Nov 02

u'Buffer overflow occurs while processing SIP message packet due to lack of check of index validation before copying int

CVE-2020-3669 CRITICAL
9.8 Sep 08

u'Buffer Overflow issue in WLAN tcp ip verification due to usage of out of range pointer offset' in Snapdragon Auto, Sna

CVE-2020-3667 CRITICAL
9.8 Sep 08

u'Buffer Overflow in mic calculation for WPA due to copying data into buffer without validating the length of buffer' in

CVE-2020-3688 CRITICAL
9.8 Jul 30

Possible buffer overflow while parsing mp4 clip with corrupted sample atoms due to improper validation of index in Snapd

CVE-2020-3663 CRITICAL
9.8 Jun 22

Buffer over-write may occur during fetching track decoder specific information if cb size exceeds buffer size in Snapdra

CVE-2020-3662 CRITICAL
9.8 Jun 22

Buffer overflow can occur while parsing eac3 header while playing the clip which is nonstandard in Snapdragon Auto, Snap

CVE-2020-3661 CRITICAL
9.8 Jun 22

Buffer overflow will happen while parsing mp4 clip with corrupted sample atoms values which exceeds MAX_UINT32 range due

CVE-2020-3660 CRITICAL
9.8 Jun 22

Possible null-pointer dereference can occur while parsing mp4 clip with corrupted sample table atoms in Snapdragon Auto,

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