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Full vulnerability report · 2026
CVE-2026-35159High confidence

Dell Client Platform BIOS contains an Authentication Bypass by Primary Weakness vulnerability

Dell · Inspiron 15 3520

5.3MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityMediumOperational priority:Medium, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • EPSS is 0.21% for the current model date.

Compensating controls

  • Restrict local access and enforce least privilege on affected hosts.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Dell Inspiron 15 3520 and falls inside the recorded affected range.
  2. Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: As exposure requiresRemediation target: Within 365 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-41525

No EUVD known-exploited evidence

Dell Client Platform BIOS contains an Authentication Bypass by Primary Weakness vulnerability. An unauthenticated attacker with physical access could potentially exploit this vulnerability, leading to Information Disclosure.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
5.3 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified
01

What, why and how

Dell Client Platform BIOS contains an Authentication Bypass by Primary Weakness vulnerability. An unauthenticated attacker with physical access could potentially exploit this vulnerability, leading to Information Disclosure.

What

Dell Client Platform BIOS contains an Authentication Bypass by Primary Weakness vulnerability. An unauthenticated attacker with physical access could potentially exploit this vulnerability, leading to Information Disclosure.

Why

The authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.

How

An attacker operating through physical access may attempt exploitation without authentication or user interaction. If successful, the issue may bypass an access boundary or take over an account.

What

Dell Client Platform BIOS contains an Authentication Bypass by Primary Weakness vulnerability. An unauthenticated attacker with physical access could potentially exploit this vulnerability, leading to Information Disclosure.

Why

The authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.

How

An attacker operating through physical access may attempt exploitation without authentication or user interaction. If successful, the issue may bypass an access boundary or take over an account.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
physical access → Authentication Bypass by Primary Weakness → bypass an access boundary or take over an account
Attack surface
Physical
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
High: exploitation depends on specific conditions
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-305 ↗

CWE-305: Authentication Bypass by Primary Weakness. The authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVPhysicalAttack vector: The attacker needs physical access to the vulnerable system.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CLowConfidentiality impact: A successful attack can cause a limited loss.IHighIntegrity impact: A successful attack can cause a major loss.ALowAvailability impact: A successful attack can cause a limited loss.
Post-exploitation / living off the land
Stolen credentials, tokens and legitimate administration functions may provide continued access without deploying a large custom toolset.
UnauthenticatedCWE-305
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2026-41525Official EUVD mapping

Dell Client Platform BIOS contains an Authentication Bypass by Primary Weakness vulnerability. An unauthenticated attacker with physical access could potentially exploit this vulnerability, leading to Information Disclosure.

Official EUVD record ↗
BSI · German · WID-SEC-2026-2202Dell Computer: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen

Ein lokaler Angreifer kann eine Schwachstelle in Dell Computer ausnutzen, um Sicherheitsvorkehrungen zu umgehen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260708Security Bulletin 8 July 2026 [PDF, 1MB]]

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 8 July 2026 [PDF, 1MB]], published on 8 July 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix not verified
Affected
  • Inspiron 15 3520: < 1.41.0 or later
  • G15 5530: < 1.33.0 or later
  • Alienware 16 Area-51 AA16250: < 2.4.1 or later
  • Alienware 16 Aurora AC16250: < 1.13.0 or later
  • Alienware 16X Aurora AC16251: < 2.4.0 or later
  • Alienware 18 Area-51 AA18250: < 2.4.1 or later
  • Alienware Area-51 AAT2250: < 1.17.2 or later
  • Alienware Aurora ACT1250: < 1.16.2 or later
  • Alienware m15 R6: < 1.44.0 or later
  • Alienware m15 R7: < 1.40.0 or later
  • Alienware m16 R1: < 1.34.0 or later
  • Alienware m16 R2: < 1.21.0 or later
  • Alienware m18 R1: < 1.34.0 or later
  • Alienware M18 R2: < 1.22.0 or later
  • Alienware x14 R2: < 1.32.0 or later
  • Alienware x16 R1: < 1.32.0 or later
  • Alienware X16 R2: < 1.22.0 or later
  • ChengMing 3900: < 1.40.0 or later
  • ChengMing 3910/3911: < 1.36.0 or later
  • Dell 14 DC14250: < 1.7.0 or later
  • 14 Plus 2-in-1 DB04250: < 1.13.0 or later
  • 14 Plus DB14250: < 1.13.0 or later
  • 15 DC15250: < 1.10.0 or later
  • 16 Plus 2-in-1 DB06250: < 1.13.0 or later
  • 16 Plus DB16250: < 1.13.0 or later
  • 24 All-in-One EC24250: < 1.15.0 or later
  • 27 All-in-One EC27250: < 1.15.0 or later
  • G15 5510: < 1.40.0 or later
  • G15 5511: < 1.43.0 or later
  • G15 5520: < 1.41.0 or later
  • G16 7620: < 1.41.0 or later
  • G16 7630: < 1.33.0 or later
  • Pro 13 Plus PB13250: < 2.13.4 or later
  • Pro 13 Plus PB13255: < 1.15.0 or later
  • Pro 13 Premium PA13250: < 2.13.4 or later
  • Pro 14 Essential PV14250: < 1.6.0 or later
  • Pro 14 PC14250: < 1.15.2 or later
  • Pro 14 Plus PB14250: < 2.13.4 or later
  • Pro 14 Plus PB14255: < 1.15.0 or later
  • Pro 14 Premium PA14250: < 2.13.4 or later
  • Pro 16 PC16250: < 1.15.2 or later
  • Pro 16 Plus PB16250: < 2.13.4 or later
  • Pro 16 Plus PB16255: < 1.15.0 or later
  • Pro 24 All-In-One Plus QB24250 / Pro 24 All-In-One QC24250 / Pro 24 All-In-One QC24251: < 1.15.1 or later
  • Pro Laptop PC14250: < 1.15.2 or later
  • Pro Laptop PC16250: < 1.15.2 or later
  • Pro Max 14 MC14250: < 1.14.1 or later
  • Pro Max 14 MC14255: < 2.4.0 or later
  • Pro Max 16 MC16250: < 1.14.1 or later
  • Pro Max 16 MC16255: < 2.4.0 or later
  • Pro Max Micro FCM2250: < 1.15.2 or later
  • Pro Max Slim FCS1250: < 1.15.2 or later
  • Pro Max Tower T2 FCT2250: < 1.15.2 or later
  • Pro Micro / QCM1255: < 1.13.0 or later
  • Pro Micro Plus QBM1250 / Pro Micro QCM1250: < 1.15.1 or later
  • Pro Micro/Micro Plus QCM1250/QBM1250: < 1.15.1 or later
  • Pro Precision 7 T1: < 1.15.1 or later
  • Pro Rugged 10 Tablets: < 1.9.0 or later
  • Pro Rugged 12 Tablet: < 1.9.0 or later
  • Pro Rugged 13 RA13250: < 1.16.1 or later
  • Pro Rugged 14 RB14250: < 1.16.1 or later
  • Pro Slim / QCS1255: < 1.13.0 or later
  • Pro Slim Essential QVS1260: < 1.15.0 or later
  • Pro Slim Plus QBS1250 / Pro Slim QCS1250: < 1.15.1 or later
  • Pro Slim Plus QBS1250/Pro Slim QCS1250: < 1.15.1 or later
  • Pro Tower / QCT1255: < 1.13.0 or later
  • Pro Tower Essential QVT1260: < 1.15.0 or later
  • Pro Tower Plus QBT1250 / Pro Tower QCT1250: < 1.15.1 or later
  • Pro Tower Plus QBT1250/Pro Tower QCT1250: < 1.15.1 or later
  • Slim ECS1250: < 1.15.0 or later
  • Tower ECT1250: < 1.15.0 or later
  • Inspiron 13 5330: < 1.31.0 or later
  • Inspiron 14 5420: < 1.36.0 or later
  • Inspiron 14 5430: < 1.29.0 or later
  • Inspiron 14 5440: < 1.22.0 or later
  • Inspiron 14 7430 2-in-1: < 1.29.0 or later
  • Inspiron 14 7440 2-in-1: < 1.22.0 or later
  • Inspiron 14 Plus 7420: < 1.37.0 or later
  • Inspiron 14 Plus 7430: < 1.29.0 or later
  • Inspiron 14 Plus 7440: < 1.25.0 or later
  • Inspiron 15 3511: < 1.46.0 or later
  • Inspiron 15 3530: < 1.32.0 or later
  • Inspiron 16 5620: < 1.36.0 or later
  • Inspiron 16 5630: < 1.29.0 or later
  • Inspiron 16 5640: < 1.21.0 or later
  • Inspiron 16 7630 2-in-1: < 1.29.0 or later
  • Inspiron 16 7640 2-in-1: < 1.21.0 or later
  • Inspiron 16 Plus 7620: < 1.37.0 or later
  • Inspiron 16 Plus 7630: < 1.29.0 or later
  • Inspiron 16 Plus 7640: < 1.25.0 or later
  • Inspiron 24 5420 All-in-One: < 1.29.0 or later
  • Inspiron 24 5430 All-in-One: < 1.22.0 or later
  • Inspiron 27 7720 All-in-One: < 1.29.0 or later
  • Inspiron 27 7730 All-in-One: < 1.22.0 or later
  • Inspiron 3020 Desktop: < 1.36.0 or later
  • Inspiron 3020 S: < 1.36.0 or later
  • 134 additional product groups retained in the authoritative source
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 3 Jul 2026 · Last source change 17 Sept 2026, 18:37 UTC · CWE-305 · Authentication Bypass by Primary Weakness

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-41525
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCNA
NVD statusNVD awaiting enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    < 1.41.0 or later; < 1.33.0 or later; < 2.4.1 or later; < 1.13.0 or later; < 2.4.0 or later; < 1.17.2 or later; < 1.16.2 or later · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    Inspiron 15 3520: < 1.41.0 or later; G15 5530: < 1.33.0 or later; Alienware 16 Area-51 AA16250: < 2.4.1 or later; Alienware 16 Aurora AC16250: < 1.13.0 or later; Alienware 16X Aurora AC16251: < 2.4.0 or later; Alienware 18 Area-51 AA18250: < 2.4.1 or later; Alienware Area-51 AAT2250: < 1.17.2 or later; Alienware Aurora ACT1250: < 1.16.2 or later; Alienware m15 R6: < 1.44.0 or later; Alienware m15 R7: < 1.40.0 or later; Alienware m16 R1: < 1.34.0 or later; Alienware m16 R2: < 1.21.0 or later; Alienware m18 R1: < 1.34.0 or later; Alienware M18 R2: < 1.22.0 or later; Alienware x14 R2: < 1.32.0 or later; Alienware x16 R1: < 1.32.0 or later; Alienware X16 R2: < 1.22.0 or later; ChengMing 3900: < 1.40.0 or later; ChengMing 3910/3911: < 1.36.0 or later; Dell 14 DC14250: < 1.7.0 or later; 14 Plus 2-in-1 DB04250: < 1.13.0 or later; 14 Plus DB14250: < 1.13.0 or later; 15 DC15250: < 1.10.0 or later; 16 Plus 2-in-1 DB06250: < 1.13.0 or later; 16 Plus DB16250: < 1.13.0 or later; 24 All-in-One EC24250: < 1.15.0 or later; 27 All-in-One EC27250: < 1.15.0 or later; G15 5510: < 1.40.0 or later; G15 5511: < 1.43.0 or later; G15 5520: < 1.41.0 or later; G16 7620: < 1.41.0 or later; G16 7630: < 1.33.0 or later; Pro 13 Plus PB13250: < 2.13.4 or later; Pro 13 Plus PB13255: < 1.15.0 or later; Pro 13 Premium PA13250: < 2.13.4 or later; Pro 14 Essential PV14250: < 1.6.0 or later; Pro 14 PC14250: < 1.15.2 or later; Pro 14 Plus PB14250: < 2.13.4 or later; Pro 14 Plus PB14255: < 1.15.0 or later; Pro 14 Premium PA14250: < 2.13.4 or later; Pro 16 PC16250: < 1.15.2 or later; Pro 16 Plus PB16250: < 2.13.4 or later; Pro 16 Plus PB16255: < 1.15.0 or later; Pro 24 All-In-One Plus QB24250 / Pro 24 All-In-One QC24250 / Pro 24 All-In-One QC24251: < 1.15.1 or later; Pro Laptop PC14250: < 1.15.2 or later; Pro Laptop PC16250: < 1.15.2 or later; Pro Max 14 MC14250: < 1.14.1 or later; Pro Max 14 MC14255: < 2.4.0 or later; Pro Max 16 MC16250: < 1.14.1 or later; Pro Max 16 MC16255: < 2.4.0 or later; Pro Max Micro FCM2250: < 1.15.2 or later; Pro Max Slim FCS1250: < 1.15.2 or later; Pro Max Tower T2 FCT2250: < 1.15.2 or later; Pro Micro / QCM1255: < 1.13.0 or later; Pro Micro Plus QBM1250 / Pro Micro QCM1250: < 1.15.1 or later; Pro Micro/Micro Plus QCM1250/QBM1250: < 1.15.1 or later; Pro Precision 7 T1: < 1.15.1 or later; Pro Rugged 10 Tablets: < 1.9.0 or later; Pro Rugged 12 Tablet: < 1.9.0 or later; Pro Rugged 13 RA13250: < 1.16.1 or later; Pro Rugged 14 RB14250: < 1.16.1 or later; Pro Slim / QCS1255: < 1.13.0 or later; Pro Slim Essential QVS1260: < 1.15.0 or later; Pro Slim Plus QBS1250 / Pro Slim QCS1250: < 1.15.1 or later; Pro Slim Plus QBS1250/Pro Slim QCS1250: < 1.15.1 or later; Pro Tower / QCT1255: < 1.13.0 or later; Pro Tower Essential QVT1260: < 1.15.0 or later; Pro Tower Plus QBT1250 / Pro Tower QCT1250: < 1.15.1 or later; Pro Tower Plus QBT1250/Pro Tower QCT1250: < 1.15.1 or later; Slim ECS1250: < 1.15.0 or later; Tower ECT1250: < 1.15.0 or later; Inspiron 13 5330: < 1.31.0 or later; Inspiron 14 5420: < 1.36.0 or later; Inspiron 14 5430: < 1.29.0 or later; Inspiron 14 5440: < 1.22.0 or later; Inspiron 14 7430 2-in-1: < 1.29.0 or later; Inspiron 14 7440 2-in-1: < 1.22.0 or later; Inspiron 14 Plus 7420: < 1.37.0 or later; Inspiron 14 Plus 7430: < 1.29.0 or later; Inspiron 14 Plus 7440: < 1.25.0 or later; Inspiron 15 3511: < 1.46.0 or later; Inspiron 15 3530: < 1.32.0 or later; Inspiron 16 5620: < 1.36.0 or later; Inspiron 16 5630: < 1.29.0 or later; Inspiron 16 5640: < 1.21.0 or later; Inspiron 16 7630 2-in-1: < 1.29.0 or later; Inspiron 16 7640 2-in-1: < 1.21.0 or later; Inspiron 16 Plus 7620: < 1.37.0 or later; Inspiron 16 Plus 7630: < 1.29.0 or later; Inspiron 16 Plus 7640: < 1.25.0 or later; Inspiron 24 5420 All-in-One: < 1.29.0 or later; Inspiron 24 5430 All-in-One: < 1.22.0 or later; Inspiron 27 7720 All-in-One: < 1.29.0 or later; Inspiron 27 7730 All-in-One: < 1.22.0 or later; Inspiron 3020 Desktop: < 1.36.0 or later; Inspiron 3020 S: < 1.36.0 or later; 134 additional product groups retained in the authoritative source · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2026-41525↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-35159 · cve.blacktree.nl