Security Digest · Vulnerability record · Known exploited
CVE-2023-33063: Qualcomm Multiple Chipsets Use-After-Free Vulnerability
Exploited in the wild (CISA KEV). Memory corruption in DSP Services during a remote call from HLOS to DSP.
CISA KEV · added 2023-12-05 CVSS 7.8 High EPSS 0.7% · p51
Should you act?
Exploited: patch now if you run it
CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- Yes, if you run Qualcomm Multiple Chipsets. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2023-12-05, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2023-12-26; treat that as the outer limit, not the target.
- EPSS 0.7%, percentile 51: FIRST’s model estimates a 0.7% chance of exploitation activity in the next 30 days, higher than 51% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Needs local access needed. Lower urgency for most teams unless an attacker could already run code on the machine.
What it is
Memory corruption in DSP Services during a remote call from HLOS to DSP.
CISA’s summary
Multiple Qualcomm chipsets contain a use-after-free vulnerability due to memory corruption in DSP Services during a remote call from HLOS to DSP.
Weakness type: CWE-416.
Product: Qualcomm Multiple Chipsets · Assigned by: qualcomm · Published: 2023-12-05
Affected and fixed versions
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| Qualcomm, Inc. | Snapdragon | 315 5G IoT Modem, APQ8017, AQT1000, AR8031, AR8035, AR9380, C-V2X 9150, CSR8811, CSRA6620, CSRA6640, CSRB31024, FastConnect 6200 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| qualcomm | 3.1 | 7.8 High | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- Attack vector: local access needed
- Attack complexity: low
- Privileges required: low (any account)
- User interaction: none
- Scope: unchanged
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: added 2023-12-05; federal due date 2023-12-26. Known ransomware use: Unknown.
- CISA required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
- CISA SSVC assessment: exploitation active, automatable no, technical impact total.
- FIRST EPSS (model of 2026-10-21): 0.67% probability of exploitation activity in the next 30 days; percentile 51.
Timeline
- — Added to CISA’s Known Exploited Vulnerabilities catalog
- — CVE record published by qualcomm
- — CISA remediation deadline for US federal agencies
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vendor and project advisories, patches
- Listed in CISA KEV notes (git.codelinaro.org) git.codelinaro.org
- Listed in CISA KEV notes (git.codelinaro.org) git.codelinaro.org
Vulnerability records
- CVE.org record CVE-2023-33063 cve.org
- NVD entry CVE-2023-33063 nvd.nist.gov
Government
Other references from the CVE record and advisory
- qualcomm.com qualcomm.com
All exploited Qualcomm vulnerabilities · Today’s Security Digest