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Csrb31024 Firmware CVE-2024-43066

HIGH
Use After Free (CWE-416)
2025-04-07 product-security@qualcomm.com
Buffer Overflow Use After Free Memory Corruption Qualcomm Csrb31024 Firmware Fastconnect 6200 Firmware Fastconnect 6700 Firmware Fastconnect 6800 Firmware Fastconnect 6900 Firmware Fastconnect 7800 Firmware Qam8295p Firmware Qca6310 Firmware Qca6335 Firmware Qca6391 Firmware Qca6426 Firmware Qca6436 Firmware Qca6564 Firmware Qca6564au Firmware Qca6574 Firmware Qca6574a Firmware Qca6574au Firmware Qca6595 Firmware Qca6595au Firmware Qca6696 Firmware Qca6698aq Firmware Qcm6490 Firmware Qcs410 Firmware Qcs610 Firmware Qcs6490 Firmware Qcs8550 Firmware Robotics Rb3 Platform Firmware Sa4150p Firmware Sa4155p Firmware Sa6145p Firmware Sa6150p Firmware Sa6155 Firmware Sa6155p Firmware Sa8145p Firmware Sa8150p Firmware Sa8155 Firmware Sa8155p Firmware Sa8195p Firmware Sa8295p Firmware Sd660 Firmware Sd865 5g Firmware Sdm429w Firmware Sg4150p Firmware Sm4125 Firmware Sm6370 Firmware Snapdragon 210 Processor Firmware Snapdragon 212 Mobile Platform Firmware Snapdragon 4 Gen 1 Mobile Platform Firmware Snapdragon 429 Mobile Platform Firmware Snapdragon 460 Mobile Platform Firmware Snapdragon 480 5g Mobile Platform Firmware Snapdragon 660 Mobile Platform Firmware Snapdragon 662 Mobile Platform Firmware Snapdragon 680 4g Mobile Platform Firmware Snapdragon 695 5g Mobile Platform Firmware Snapdragon 820 Automotive Platform Firmware Snapdragon 845 Mobile Platform Firmware Snapdragon 865 5g Mobile Platform Firmware Snapdragon Auto 4g Modem Firmware Snapdragon Auto 5g Modem Rf Firmware Snapdragon X55 5g Modem Rf System Firmware Snapdragon Xr1 Platform Firmware Snapdragon Xr2 5g Platform Firmware Sw5100 Firmware Sw5100p Firmware Sxr1120 Firmware Sxr2130 Firmware Video Collaboration Vc1 Platform Firmware Video Collaboration Vc3 Platform Firmware Vision Intelligence 400 Platform Firmware Wcd9326 Firmware Wcd9335 Firmware Wcd9340 Firmware Wcd9341 Firmware Wcd9370 Firmware Wcd9375 Firmware Wcd9380 Firmware Wcd9385 Firmware Wcn3610 Firmware Wcn3620 Firmware Wcn3660b Firmware Wcn3680b Firmware Wcn3910 Firmware Wcn3950 Firmware Wcn3980 Firmware Wcn3988 Firmware Wcn3990 Firmware Wsa8810 Firmware Wsa8815 Firmware Wsa8830 Firmware Wsa8835 Firmware Snapdragon 865 5G Mobile Platform Sm8250 Ab Firmware Snapdragon 870 5G Mobile Platform Sm8250 Ac Firmware Snapdragon 480 5G Mobile Platform Sm4350 Ac Firmware Snapdragon 685 4G Mobile Platform Sm6225 Ad Firmware Snapdragon W5 Gen 1 Wearable Platform Firmware Mdm9650 Firmware Qualcomm 205 Mobile Platform Firmware
7.8
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V15 - Secure Coding and Architecture Memory lifecycle management
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Privilege Escalation

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

Impact

CVSS score of 7.8 (HIGH). Attack characteristics: local attack vector, low complexity, low privileges required, no user interaction not required. EPSS exploitation probability: 0.07%.

Exploit ScenarioDerived

A local attacker with access to the system could access freed memory to execute arbitrary code or crash the application.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 28, 2026

Memory corruption while handling file descriptor during listener registration/de-registration. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.

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 Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. Memory corruption while handling file descriptor during listener registration/de-registration. Affected products include: Qualcomm Csrb31024 Firmware, Qualcomm Fastconnect 6200 Firmware, Qualcomm Fastconnect 6700 Firmware, Qualcomm Fastconnect 6800 Firmware, Qualcomm Fastconnect 6900 Firmware.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

DescriptionCVE.org

Memory corruption while handling file descriptor during listener registration/de-registration.

Executive ViewAI

Why It Matters

CVE-2024-43066 presents notable security risk, a use-after-free vulnerability rated CVSS 7.8. Exploitation could compromise the security of affected deployments. Organizations should apply vendor updates when available and consider compensating controls in the interim.

Business Impact: High
Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Enable ASLR and DEP where available; (2) Implement network segmentation; (3) Monitor for exploitation indicators.

Threat Intelligence Overview

EPSS Score
0.1%
Top 79% exploitable
Data Quality
3 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 0.1%
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
Small
Automatable· derived
No
Human Impact
High

Priority Score

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

Attack Technique

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Use-after-free vulnerabilities occur when a program continues to access memory through a pointer after that memory has been deallocated.

Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.

Affected Products (CPE)CVE.org

cpe:2.3:o:qualcomm:csrb31024_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:fastconnect_6200_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:fastconnect_6700_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:fastconnect_6800_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:fastconnect_6900_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdm429w_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sg4150p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm4125_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm6370_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_210_processor_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_212_mobile_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_4_gen_1_mobile_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_429_mobile_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_460_mobile_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_480_5g_mobile_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_480\+_5g_mobile_platform_\(sm4350-ac\)_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_660_mobile_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_662_mobile_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_680_4g_mobile_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_685_4g_mobile_platform_\(sm6225-ad\)_firmware:-:*:*:*:*:*:*:*
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