Security Resilience

CVE-2023-43535

Qualcomm Fastconnect 6700 Firmware

Published
06 February 2024
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 0.0011 1th percentile
Risk Priority 58 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-2023-43535 is a high-severity Improper Validation of Array Index (CWE-129) vulnerability in Qualcomm Fastconnect 6700 Firmware. Its CVSS base score is 8.4 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Steganography (T1001.002); ranked at the 1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability Data

Memory corruption when negative display IDs are sent as input while processing DISPLAYESCAPE event trigger.

CWE(s)
CWE-129

Related Threats

MITRE ATT&CK Enterprise Techniques

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 →
T1003.002 Security Account Manager Credential Access
Adversaries may attempt to extract credential material from the Security Account Manager (SAM) database either through in-memory techniques or through the Windows Registry where the SAM database is stored.
attack.mitre.org →
T1003.003 NTDS Credential Access
Adversaries may attempt to access or create a copy of the Active Directory domain database in order to steal credential information, as well as obtain other information about domain members such as devices, users, and access rights.
attack.mitre.org →
T1003.008 /etc/passwd and /etc/shadow Credential Access
Adversaries may attempt to dump the contents of <code>/etc/passwd</code> and <code>/etc/shadow</code> to enable offline password cracking.
attack.mitre.org →
T1008 Fallback Channels Command And Control
Adversaries may use fallback or alternate communication channels if the primary channel is compromised or inaccessible in order to maintain reliable command and control and to avoid data transfer thresholds.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2025-21447Same product: Qualcomm Fastconnect 6900
CVE-2024-45550Same product: Qualcomm Fastconnect 6900
CVE-2024-49836Same product: Qualcomm Fastconnect 6900
CVE-2024-49832Same product: Qualcomm Fastconnect 6900
CVE-2025-21423Same product: Qualcomm Fastconnect 6700
CVE-2024-45582Same product: Qualcomm Fastconnect 6900
CVE-2026-25276Same product: Qualcomm Fastconnect 6700
CVE-2024-49843Same product: Qualcomm Fastconnect 7800
CVE-2024-49833Same product: Qualcomm Fastconnect 6700
CVE-2023-43532Same product: Qualcomm Fastconnect 6700

Affected Assets

qualcomm
fastconnect 6700 firmware
all versions
qualcomm
fastconnect 6900 firmware
all versions
qualcomm
fastconnect 7800 firmware
all versions
qualcomm
sc8380xp firmware
all versions
qualcomm
snapdragon 7c\+ gen 3 compute firmware
all versions
qualcomm
snapdragon 8cx gen 3 compute platform firmware
all versions
qualcomm
wcd9380 firmware
all versions
qualcomm
wcd9385 firmware
all versions
qualcomm
wsa8830 firmware
all versions
qualcomm
wsa8835 firmware
all versions
+3 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 require input validation and bounds checking that prevent improper array indexing.

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