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Full vulnerability report · 2021
CVE-2021-0433High confidence

In onCreate of DeviceChooserActivity.java, there is a possible way to bypass user consent when pairing a Bluetooth device due to a tapjacking/overlay attack

n/a · Android

8.0HighCVSS 3.1
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
SSA-770721 · CSAF 2.0 · revision 1 · interimSiemens ProductCERTSSA-770721: Multiple Vulnerabilities in SIMATIC RF160B before V2.2
1 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • SIMATIC RF160B (6GT2003-0FA00)
Summary
In onCreate of DeviceChooserActivity.java, there is a possible way to bypass user consent when pairing a Bluetooth device due to a tapjacking/overlay attack. This could lead to local escalation of privilege and pairing malicious devices with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-8.1 Android-9 Android-10 Android-11Android ID: A-171221090
Remediation
Update to V2.2 or later version
Optional official sources

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

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

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-2021-3052

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

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
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

In onCreate of DeviceChooserActivity.java, there is a possible way to bypass user consent when pairing a Bluetooth device due to a tapjacking/overlay attack. This could lead to local escalation of privilege and pairing malicious devices with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-8.1 Android-9 Android-10 Android-11Android ID: A-171221090

What

In onCreate of DeviceChooserActivity.java, there is a possible way to bypass user consent when pairing a Bluetooth device due to a tapjacking/overlay attack. This could lead to local escalation of privilege and pairing malicious devices with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-8.1 Android-9 Android-10 Android-11Android ID: A-171221090

Why

The web application does not restrict or incorrectly restricts frame objects or UI layers that belong to another application or domain.

How

An attacker operating through the affected interface may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

In onCreate of DeviceChooserActivity.java, there is a possible way to bypass user consent when pairing a Bluetooth device due to a tapjacking/overlay attack. This could lead to local escalation of privilege and pairing malicious devices with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-8.1 Android-9 Android-10 Android-11Android ID: A-171221090

Why

The web application does not restrict or incorrectly restricts frame objects or UI layers that belong to another application or domain.

How

An attacker operating through the affected interface may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

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
the affected interface → Improper Restriction of Rendered UI Layers or Frames → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Unspecified
Privileges required
None: unauthenticated exploitation is possible
User interaction
Required interaction required
Attack complexity
Low: no specialised conditions are recorded
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-1021 ↗

CWE-1021: Improper Restriction of Rendered UI Layers or Frames. The web application does not restrict or incorrectly restricts frame objects or UI layers that belong to another application or domain.

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

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

AVAdjacentAttack vector: The attacker must be on an adjacent or logically close network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
UnauthenticatedCWE-1021
A

Official authority intelligence

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

CERT-FR · French · CERTFR-2024-AVI-0203Multiples vulnérabilités dans les produits Siemens

.cve.org/CVERecord?id=CVE-2021-0392 Référence CVE CVE-2021-0393 https://www.cve.org/CVERecord?id=CVE-2021-0393 Référence CVE CVE-2021-0394 https://www.cve.org/CVERecord?id=CVE-2021-0394 Référence CVE CVE-2021-0396 https://www.cve.org/CVERecord?id=CVE-2021-0396 Référence CVE CVE-2021-0397 https://www.cve.org/CVERecord?id=CVE-2021-0397 Référence CVE CVE-2021-0399 https://www.cve.org/CVERecord?id=CVE-2021-0399 Référence CVE CVE-2021-0400 https://www.cve.org/CVERecord?id=CVE-2021-0400 Référence CVE CVE-2021-0429 https://www.cve.org/CVERecord?id=CVE-2021-0429 Référence CVE CVE-2021-0431 https://www.cve.org/CVERecord?id=CVE-2021-0431 Référence CVE CVE-2021-0433 https://www.cve.org/CVERecord?id=CVE-2021-0433 Référence CVE CVE-2021-0434 https://www.cve.org/CVERecord?id=CVE-2021-0434 Référence CVE CVE-2021-0435 https://www.cve.org/CVERecord?id=CVE-2021-0435 Référence CVE CVE-2021-0436 https://www.cve.org/CVERecord?id=CVE-2021-0436 Référence CVE CVE-2021-0437 https://www.cve.org/CVERecord?id=CVE-2021-0437 Référence CVE CVE-2021-0438 https://www.cve.org/CVERecord?id=CVE-2021-0438 Référence CVE CVE-2021-0443 https://www.cve.org/CVERecord?id=CVE-2021-0443 Référence CVE CVE-2021-0444 https://www.cve.org/CVERecord?id=CVE-2021-0444 Référence CVE CVE-2021-0471 https://www.cve.org/CVERecord?id=CVE-2021-0471 Ré

Official advisory
CERT-FR · French · CERTFR-2021-AVI-240Multiples vulnérabilités dans Google Android

.cve.org/CVERecord?id=CVE-2020-5235 Référence CVE CVE-2021-0400 https://www.cve.org/CVERecord?id=CVE-2021-0400 Référence CVE CVE-2021-0426 https://www.cve.org/CVERecord?id=CVE-2021-0426 Référence CVE CVE-2021-0427 https://www.cve.org/CVERecord?id=CVE-2021-0427 Référence CVE CVE-2021-0428 https://www.cve.org/CVERecord?id=CVE-2021-0428 Référence CVE CVE-2021-0429 https://www.cve.org/CVERecord?id=CVE-2021-0429 Référence CVE CVE-2021-0430 https://www.cve.org/CVERecord?id=CVE-2021-0430 Référence CVE CVE-2021-0431 https://www.cve.org/CVERecord?id=CVE-2021-0431 Référence CVE CVE-2021-0432 https://www.cve.org/CVERecord?id=CVE-2021-0432 Référence CVE CVE-2021-0433 https://www.cve.org/CVERecord?id=CVE-2021-0433 Référence CVE CVE-2021-0435 https://www.cve.org/CVERecord?id=CVE-2021-0435 Référence CVE CVE-2021-0436 https://www.cve.org/CVERecord?id=CVE-2021-0436 Référence CVE CVE-2021-0437 https://www.cve.org/CVERecord?id=CVE-2021-0437 Référence CVE CVE-2021-0438 https://www.cve.org/CVERecord?id=CVE-2021-0438 Référence CVE CVE-2021-0439 https://www.cve.org/CVERecord?id=CVE-2021-0439 Référence CVE CVE-2021-0442 https://www.cve.org/CVERecord?id=CVE-2021-0442 Référence CVE CVE-2021-0443 https://www.cve.org/CVERecord?id=CVE-2021-0443 Référence CVE CVE-2021-0444 https://www.cve.org/CVERecord?id=CVE-2021-0444 Ré

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.
Patch available
Affected
SIMATIC RF160B (6GT2003-0FA00)
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Update to V2.2 or later version
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 13 Apr 2021 · Last source change 3 Aug 2024, 15:40 UTC · CWE-1021 · Improper Restriction of Rendered UI Layers or Frames

CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
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-2021-3052
Product sourceVendor CSAF · Siemens ProductCERT
Remediation sourceVendor CSAF · Siemens ProductCERT
CWE sourceNIST NVD
NVD statusNVD modified after enrichment

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

Material change intelligence

What changed after publication

View recent updates →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2021-3052↗Vendor CSAF · Siemens ProductCERT↗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-2021-0433 · cve.blacktree.nl