Security Resilience

CVE-2023-21666

Qualcomm Qrb5165 Firmware

Public PoC
Published
02 May 2023
Modified
21 November 2024
Patch / advisory
View advisory
CVSS Score v3.1 8.4
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0018 7th percentile
Risk Priority 59 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-21666 is a high-severity Missing Release of Memory after Effective Lifetime (CWE-401) vulnerability in Qualcomm Qrb5165 Firmware. Its CVSS base score is 8.4 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Junk Data (T1001.001); ranked at the 7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability Data

Memory Corruption in Graphics while accessing a buffer allocated through the graphics pool.

CWE(s)
CWE-401

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001.001 Junk Data Command And Control
Adversaries may add junk data to protocols used for command and control to make detection more difficult.
attack.mitre.org →
T1001.002 Steganography Command And Control
Adversaries may use steganographic techniques to hide command and control traffic to make detection efforts more difficult.
attack.mitre.org →
T1001.003 Protocol or Service Impersonation Command And Control
Adversaries may impersonate legitimate protocols or web service traffic to disguise command and control activity and thwart analysis efforts.
attack.mitre.org →
T1003 OS Credential Dumping Credential Access
Adversaries may attempt to dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password.
attack.mitre.org →
T1003.001 LSASS Memory Credential Access
Adversaries may attempt to access credential material stored in the process memory of the Local Security Authority Subsystem Service (LSASS).
attack.mitre.org →
T1003.004 LSA Secrets Credential Access
Adversaries with SYSTEM access to a host may attempt to access Local Security Authority (LSA) secrets, which can contain a variety of different credential materials, such as credentials for service accounts.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-33086Same product: Qualcomm Qca6174A
CVE-2023-33049Same product: Qualcomm Qca6174A
CVE-2025-47397Same product: Qualcomm Qca6391
CVE-2023-33084Same product: Qualcomm Qca8337
CVE-2023-21665Same product: Qualcomm 8905
CVE-2023-43511Same product: Qualcomm Flight Rb5 5G Platform
CVE-2023-33059Same product: Qualcomm 8953Pro
CVE-2023-28537Same product: Qualcomm 8998
CVE-2024-23352Same product: Qualcomm Qca6174A
CVE-2023-21670Same product: Qualcomm Flight Rb5 5G Platform

Affected Assets

qualcomm
wcn3998 firmware
all versions
qualcomm
qca6390 firmware
all versions
qualcomm
wcn685x-5 firmware
all versions
qualcomm
wcn685x-1 firmware
all versions
qualcomm
flight rb5 5g platform firmware
all versions
qualcomm
home hub 100 platform firmware
all versions
qualcomm
mdm9250 firmware
all versions
qualcomm
mdm9628 firmware
all versions
qualcomm
mdm9650 firmware
all versions
qualcomm
msm8108 firmware
all versions
+155 more product configuration(s) — see NVD for full list

Mitigating Controls

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 partial match
blocks

Secure SDLC practices directly enforce proper memory allocation/deallocation via coding standards, reviews, and tooling.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.14 Information transfer partial match
removes
A.5.15 Access control partial match
removes
A.5.16 Identity management partial match
removes
A.5.17 Authentication information partial match
removes
A.5.18 Access rights partial match
removes
A.8.10 Information deletion partial match
removes

References