Cyber Resilience

CVE-2023-33034

Memory Safety in Qualcomm Csra6620 Firmware

Memory Safety
Published
03 October 2023
Modified
11 August 2025
Patch / advisory
View advisory
CVSS Score v3.1 7.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0011 1th percentile
Risk Priority 54 floored blend · peak EPSS

Summary

CVE-2023-33034 is a high-severity Signed to Unsigned Conversion Error (CWE-195) vulnerability in Qualcomm Csra6620 Firmware. Its CVSS base score is 7.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

Memory corruption while parsing the ADSP response command.

CWE(s)
CWE-195CWE-787

Related Threats

MITRE ATT&CK Enterprise Techniques

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
T1211 Exploitation for Stealth Stealth
Adversaries may exploit vulnerabilities to evade detection by hiding activity, suppressing logging, or operating within trusted or unmonitored components.
attack.mitre.org →
T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-33055Same product: Qualcomm Apq5053-Aa
CVE-2024-45543Same product: Qualcomm Qam8295P
CVE-2023-33113Same product: Qualcomm Csra6620
CVE-2023-28580Same product: Qualcomm Qam8295P
CVE-2023-21650Same product: Qualcomm Qam8295P
CVE-2023-33074Same product: Qualcomm Qam8295P
CVE-2023-21649Same product: Qualcomm Qca6391
CVE-2023-33031Same product: Qualcomm Apq5053-Aa
CVE-2023-22383Same product: Qualcomm Qam8295P
CVE-2023-28537Same product: Qualcomm Apq5053-Aa

Affected Assets

qualcomm
csra6620 firmware
all versions
qualcomm
csra6640 firmware
all versions
qualcomm
wcn3991 firmware
all versions
qualcomm
wcn3998 firmware
all versions
qualcomm
wcn6750 firmware
all versions
qualcomm
wcn685x-5 firmware
all versions
qualcomm
wcn685x-1 firmware
all versions
qualcomm
flight rb5 5g platform firmware
all versions
qualcomm
qam8295p firmware
all versions
qualcomm
qca6391 firmware
all versions
+54 more product configuration(s) — see NVD for full list

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-16 Memory Protection
addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

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 mostly match
prevents

Secure SDLC practices (static analysis, code review, safe-integer standards) directly prevent signed-to-unsigned conversion errors.

ID.RA-01 partial match
prevents

Vulnerability scanning and recording can discover out-of-bounds write flaws so they can be remediated.

PR.PS-02 partial match
prevents

Patching or replacing vulnerable software directly eliminates known instances of this coding weakness.

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.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development can detect conversion-related defects before release.

A.8.25 Secure development life cycle partial match
prevents

Secure development life cycle mandates practices that can catch signed-to-unsigned conversion errors during design and coding.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify safe integer handling and type-conversion rules.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure system architecture and engineering principles include data-type safety and overflow prevention.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly prohibit unsafe signed-to-unsigned casts and require defensive checks.

A.8.32 Change management partial match
prevents

Change management can enforce review gates that catch unsafe memory operations before deployment.

References