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CVE Record

CVE-2023-43535: Improper Validation of Array Index in Display

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

HighCVSS 8.4Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This Qualcomm Snapdragon issue can corrupt memory when invalid negative display IDs are handled. A local attacker would not need privileges or user interaction according to the CVSS vector, and successful exploitation could affect confidentiality, integrity, and availability.

Executive priority

Treat as high priority for affected Qualcomm-based assets because impact is full confidentiality, integrity, and availability. Urgency is reduced only by the local attack vector and lack of cited active exploitation.

Technical view

CVE-2023-43535 is CWE-129 improper array index validation in Qualcomm display handling. The source describes memory corruption when negative display IDs are processed during a DISPLAYESCAPE event trigger. CVSS 3.1 is 8.4 with local attack vector, low complexity, no privileges, and no user interaction.

Likely exposure

Exposure is most likely in devices or platforms using the listed Qualcomm Snapdragon, FastConnect, SC, WCD, or WSA components. Actual exposure depends on OEM integration and firmware or driver update status.

Exploitation context

The provided sources do not show CISA KEV listing or confirmed active exploitation. The CVSS vector indicates local exploitation potential without privileges or user interaction, but the bundle does not provide exploit maturity details.

Researcher notes

Evidence is limited to the CVE record, CVE List data, and Qualcomm bulletin reference. Do not assume broader product impact beyond the listed components without OEM confirmation.

Mitigation direction

  • Review Qualcomm's February 2024 security bulletin and linked OEM guidance.
  • Apply vendor or OEM firmware and driver updates for affected Qualcomm components.
  • Prioritize fleets using the listed Snapdragon, FastConnect, SC, WCD, or WSA parts.
  • If no update is available, ask the OEM for CVE-2023-43535 remediation status.

Validation and detection

  • Inventory hardware models and chipsets for the affected Qualcomm component list.
  • Check OEM firmware, driver, and security bulletin references for CVE-2023-43535 coverage.
  • Confirm deployed update levels against Qualcomm and OEM advisory dates.
  • Track exceptions where OEM support status is unclear or unavailable.
Prepared
Confidence
medium
Sources
3

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-129: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2023-43535 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
8.4 (3.1)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
8.4CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H2.55.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

8.4High
CVSS 3.1 vector shape for CVE-2023-43535Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Qualcomm, Inc.SnapdragonFastConnect 6700, FastConnect 6900, FastConnect 7800, SC8380XP, Snapdragon 7c+ Gen 3 Compute, Snapdragon 8cx Gen 3 Compute Platform (SC8280XP-AB, BB), WCD9380, WCD9385, WSA8830, WSA8835, WSA8840, WSA8845, WSA8845Hunaffected
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-129 · source CWE mapping

Improper Validation of Array Index

Improper Validation of Array Index represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.