CASCACascade Atlas

Evidence dossier

CVE-2023-33063

Use After Free in DSP Services

Exploited in the wild (CISA KEV since Dec 5, 2023). NVD reports CVSS 3.1 7.8. EPSS estimates 0.7% exploit likelihood as of Aug 27, 2026.

72.3–76.2Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

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

State
PUBLISHED
Published
Dec 5, 2023
Updated
Oct 21, 2025
Evidence coverage
92%

Evidence chronology

What was known when

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  1. Source dateSource date omittedFirst observed by CASCA
    CISA-ADP

    Record text: CISA ADP Vulnrichment

    Inspect raw assertion
    Field
    container
    Value
    CISA ADP Vulnrichment
    Original evidence ↗
  2. Source dateSource date omittedFirst observed by CASCA
    CVE Program

    Record text: CVE Program Container

    Inspect raw assertion
    Field
    container
    Value
    CVE Program Container
    Original evidence ↗
  3. Source dateSource date omittedFirst observed by CASCA
    qualcomm

    Record text: Use After Free in DSP Services

    Inspect raw assertion
    Field
    container
    Value
    Use After Free in DSP Services
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: Qualcomm Multiple Chipsets Use-After-Free Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Qualcomm Multiple Chipsets Use-After-Free Vulnerability
    Original evidence ↗
  5. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 0.7% probability · 50.53th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.007000000000; percentile 0.505340000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Dec 5, 2023 · first observed Jul 19, 2026

Exploit likelihood0.70%

FIRST EPSS · score date Aug 27, 2026 · 50.5th percentile · first observed Aug 27, 2026

SeverityCVSS 7.8

NVD · CVSS 3.1 · first observed Jul 19, 2026 · same-version scores align in this snapshot

Evidence detail

Source limits and decisions

Why each evidence state has this value

Outside this view’s verified evidence

Reason detail begins outside this selected snapshot; the state remains source-bound.

Source comparison

Who said what

CISA-ADPIndependent enrichment
Record text

CISA ADP Vulnrichment

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Field
container
Value
CISA ADP Vulnrichment
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CVE ProgramDerivative copy
Record text

CVE Program Container

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Field
container
Value
CVE Program Container
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
qualcommOriginal assertion
Record text

Use After Free in DSP Services

Inspect raw assertion
Field
container
Value
Use After Free in DSP Services
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CISA KEVOriginal assertion
Exploitation cataloged

Qualcomm Multiple Chipsets Use-After-Free Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
Qualcomm Multiple Chipsets Use-After-Free Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

0.7% probability · 50.53th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.007000000000; percentile 0.505340000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
562Underlying assertions
562Canonical products
281Target assertions
281Constraint assertions

Grouped from 562 configuration nodes in this exact snapshot. Visual grouping is navigational; asset exposure and root cause require cited evidence.

This CVE has more than 500 applicability assertions. The returned evidence is deterministically capped; the summary counts cover the complete snapshot.

Identity source boundaries
  • Cpe dictionary1,775,266 records · observed through 2026-07-21T06:45:29.809Z27d65b0f-b718-4b4f-bb79-c47c68d09dfa
  • Cpe match643,502 records · observed through 2026-07-21T08:13:17.697Z955dae73-7302-438b-aee1-058d7cc5d48e

758 scope groups

CISA-ADP · source assertedqualcomm315_5g_iot_modem_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommapq8017_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommaqt1000_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommar8031_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommar8035_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommar9380_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommcsr8811_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommcsra6620_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommcsra6640_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommcsrb31024_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommc-v2x_9150_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommfastconnect_6200_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommfastconnect_6700_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommfastconnect_6800_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommfastconnect_6900_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommfastconnect_7800_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommflight_rb5_5g_platform_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommimmersive_home_214_platform_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommimmersive_home_216_platform_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommimmersive_home_316_platform_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommimmersive_home_318_platform_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommipq4018_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommipq4019_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommipq4028_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]
CISA-ADP · source assertedqualcommipq4029_firmwareDirect source scope
Affected: 0 through * (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "*"}]

Affected-product evidence

Accepted scope and product mapping

0 canonical links · 0 source-reported links

Applicability remains source-scoped; safety and exposure remain unassessed.

Assessments

CVSS by origin

7.8
NVDCVSS 3.1 · role Primary · priority eligiblevalid_matchCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8
product-security@qualcomm.comCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8
qualcommCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Evidence boundaries

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; remaining scope stays source-scoped.
  • NVD-carried upstream facts remain derivative; independent corroboration requires a separately authored source.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Affected-product evidence remains source-scoped; canonical linkage is required before applicability scoring.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.
  • OSV aggregation and OSV-converted NVD material are not independent corroboration.
  • Red Hat facts are vendor assertions for the exact supplied products.
  • Nonmembership and not-yet-observed states are not proof of safety.