What is the CVSS score of CVE-2023-28576?

CVE-2023-28576 has a CVSS 3.1 base score of 7.0 (High). CVSS vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Is there a patch available for CVE-2023-28576?

Yes, a patch is available for CVE-2023-28576. Update the affected software to the latest version immediately.

Fastconnect 6800 Firmware CVE-2023-28576

HIGH

Time-of-check Time-of-use (TOCTOU) Race Condition (CWE-367)

2023-08-08 product-security@qualcomm.com

Buffer Overflow Qualcomm Fastconnect 6800 Firmware Fastconnect 6900 Firmware Fastconnect 7800 Firmware Qca6391 Firmware Qca6426 Firmware Qca6436 Firmware Qcn9074 Firmware Qcs410 Firmware Qcs610 Firmware Sd865 5g Firmware Snapdragon 8 Gen 1 Firmware Snapdragon Xr2 5g Firmware Sw5100 Firmware Sw5100p Firmware Sxr2130 Firmware Wcd9341 Firmware Wcd9370 Firmware Wcd9380 Firmware Wcn3660b Firmware Wcn3680b Firmware Wcn3950 Firmware Wcn3980 Firmware Wcn3988 Firmware Wsa8810 Firmware Wsa8815 Firmware Wsa8830 Firmware Wsa8835 Firmware Snapdragon 865 5G Firmware Snapdragon 870 5G Firmware Snapdragon X55 5G Firmware

7.0

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-367 ASVS 5.0 V15 - Secure Coding and Architecture TOCTOU prevention
Impact	CVSS score of 7.0 (HIGH). Attack characteristics: local attack vector, high complexity, low privileges required, no user interaction not required.
Exploit ScenarioDerived	Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 0.1% exploitation probability (EPSS)

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AnalysisAI

The buffer obtained from kernel APIs such as cam_mem_get_cpu_buf() may be readable/writable in userspace after kernel accesses it. Rated high severity (CVSS 7.0).

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

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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-367. The buffer obtained from kernel APIs such as cam_mem_get_cpu_buf() may be readable/writable in userspace after kernel accesses it. In other words, user mode may race and modify the packet header (e.g. header.count), causing checks (e.g. size checks) in kernel code to be invalid. This may lead to out-of-bounds read/write issues. Affected products include: Qualcomm Fastconnect 6800 Firmware, Qualcomm Fastconnect 6900 Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Qca6391 Firmware, Qualcomm Qca6426 Firmware.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.0 HIGH

AV:L/AC:H/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

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionNVD

The buffer obtained from kernel APIs such as cam_mem_get_cpu_buf() may be readable/writable in userspace after kernel accesses it. In other words, user mode may race and modify the packet header (e.g. header.count), causing checks (e.g. size checks) in kernel code to be invalid. This may lead to out-of-bounds read/write issues.

Threat Intelligence Overview

EPSS Score

0.1%

Top 100% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

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 Yes

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

Defer

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +35

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

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.

Affected Products (CPE)NVD

cpe:2.3:o:qualcomm:fastconnect_6800_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:qualcomm:fastconnect_6900_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:qualcomm:fastconnect_7800_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:qualcomm:qca6391_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:qualcomm:qca6426_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:qualcomm:qca6436_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:qualcomm:qcn9074_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:qualcomm:qcs410_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:qualcomm:qcs610_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:qualcomm:sd865_5g_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:qualcomm:snapdragon_8_gen_1_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:qualcomm:snapdragon_865_5g_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:qualcomm:snapdragon_865\+_5g_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:qualcomm:snapdragon_870_5g_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:qualcomm:snapdragon_x55_5g_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:qualcomm:snapdragon_xr2_5g_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:qualcomm:sw5100_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:qualcomm:sw5100p_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:qualcomm:sxr2130_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:qualcomm:wcd9341_firmware:-:*:*:*:*:*:*:*

+ 11 more

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References

Advisories & patches

PATCH https://www.qualcomm.com/company/product-security/bulletins/august-2023-bulletin

Search Externally

GitHub PoC

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