NVD / CVE Program· CNA qualcomm

CVE-2023-33063: Use After Free in DSP Services

Noroxi assessment

Priority: This week (action score 61/100)

CISA has confirmed exploitation in the wild (Dec 5, 2023). Remediation deadline for US federal agencies: Dec 26, 2023.
Probability of exploitation in the next 30 days: 0.67% (FIRST EPSS); higher than 52.1% of all records.
Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Don’t wait for the next maintenance window. Until a fix is released, restrict access to the affected component and follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · CISA KEV · FIRST EPSS

Memory corruption in DSP Services during a remote call from HLOS to DSP.

HighCVSS 7.8 · v3.1KEVWeaponized No fix recorded

Memory safety

BDU:2025-13122

Published: Dec 4, 2023
Updated: Jun 17, 2026
EPSS: 0.6% · 52th percentile
CWE: CWE-416

Report tools

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Action score

This week

Don’t wait for the next maintenance window.

CVSS: 31 / 40 · 7.8 / 10
CISA KEV: 30 / 30 · Listed
EPSS: 0 / 30 · 0.6%

CISA SSVC decision

Exploitation: active
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: 7.8
CNA · qualcomm: 7.8; agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Dec 5, 2023. That signals real attacks, not theory.

Remediation deadline for US federal agencies: Dec 26, 2023.

Get told when this record changes

In CISA KEV: exploitation in the wild confirmed
Weaponized exploit exists
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
qualcomm	315 5g iot modem firmware	cpe:2.3:o:qualcomm:315_5g_iot_modem_firmware
qualcomm	315 5g iot modem	cpe:2.3:h:qualcomm:315_5g_iot_modem
qualcomm	apq8017 firmware	cpe:2.3:o:qualcomm:apq8017_firmware
qualcomm	apq8017	cpe:2.3:h:qualcomm:apq8017
qualcomm	aqt1000 firmware	cpe:2.3:o:qualcomm:aqt1000_firmware
qualcomm	aqt1000	cpe:2.3:h:qualcomm:aqt1000
qualcomm	ar8031 firmware	cpe:2.3:o:qualcomm:ar8031_firmware
qualcomm	ar8031	cpe:2.3:h:qualcomm:ar8031
qualcomm	ar8035 firmware	cpe:2.3:o:qualcomm:ar8035_firmware
qualcomm	ar8035	cpe:2.3:h:qualcomm:ar8035
qualcomm	ar9380 firmware	cpe:2.3:o:qualcomm:ar9380_firmware
qualcomm	ar9380	cpe:2.3:h:qualcomm:ar9380

and 188 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

qualcomm 315 5g iot modem firmwareall versions
qualcomm 8098 firmwareall versions
qualcomm 8953pro firmwareall versions
qualcomm 8998 firmwareall versions
qualcomm apq5053-aa firmwareall versions
qualcomm apq8009 firmwareall versions
qualcomm apq8017 firmwareall versions
qualcomm apq8053-aa firmwareall versions
qualcomm apq8053-ac firmwareall versions
qualcomm aqt1000 firmwareall versions
qualcomm ar8031 firmwareall versions
qualcomm ar8035 firmwareall versions
qualcomm ar9380 firmwareall versions
qualcomm c-v2x 9150 firmwareall versions
qualcomm csr8811 firmwareall versions
qualcomm csra6620 firmwareall versions
qualcomm csra6640 firmwareall versions
qualcomm csrb31024 firmwareall versions
qualcomm flight rb5 5g platform firmwareall versions
qualcomm immersive home 214 platform firmwareall versions

Versions reported by the vendor

Affected version ranges reported by the assigning authority (qualcomm). Independent of NVD's CPE analysis and usually ahead of it.

Qualcomm, Inc. Snapdragon
- 315 5G IoT Modem, APQ8017, AQT1000, AR8031, AR8035, AR9380, C-V2X 9150, CSR8811, CSRA6620, CSRA6640, CSRB31024, FastConnect 6200 … (+28)affected

Same product

qualcomm: all records

Other highest-scoring records for the same primary product.

CVE-2023-33107Integer Overflow or Wraparound in Graphics LinuxKEV
61This week
CVE-2023-22388Use of Out-of-range Pointer Offset in Multi-mode Call Processor
39Monitor
CVE-2023-22385Buffer Over-read in Data Modem
39Monitor

Published before and after this one in the same product

← EarlierCVE-2023-33044Dec 4, 2023 · Reachable Assertion in Data Modem
30Monitor
← EarlierCVE-2023-33054Dec 4, 2023 · Improper Authentication in GPS HLOS Driver
36Monitor
Later →CVE-2023-33080Dec 4, 2023 · Buffer over-read in WLAN Firmware
30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

PublishedDec 4, 2023
CISA KEVDec 5, 2023same day
TodayNov 4, 2026+1065 d

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2023-3311429 days apartUse after free in Neural Processing Unit
31Monitor
CVE-2023-3312029 days apartUse After Free in Audio
31Monitor
CVE-2024-21468119 days apartUse After Free in Kernel
31Monitor
CVE-2024-23373210 days apartUse After Free in Graphics
31Monitor
CVE-2025-21424455 days apartUse After Free in NPU
31Monitor
CVE-2025-21453519 days apartUse After Free in GPS HLOS Driver
31Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

TR-23-0675 · Dec 5, 2023(Google Android Güvenlik Güncellemesi)

All national notices →

Technical details

Attack conditions

Someone with local access to the system can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Local
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-416 · Use After Free

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

The bug in code

The whole CWE-416 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1free(dev->buf);
2/* ... another thread is still running ... */
3process(dev->buf);

Fixed

1lock(&dev->lock);
2free(dev->buf);
3dev->buf = NULL;
4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

www.qualcomm.com/company/product-security/bulletins/december-2023-bulletin

Show all references (1 more)

www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-33063

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records