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CVE Record

CVE-2025-1941: Lock screen setting bypass in Firefox Focus for Android

Under certain circumstances, a user opt-in setting that Focus should require authentication before use could have been be bypassed (distinct from CVE-2025-0245). This vulnerability was fixed in Firefox 136.

CriticalCVSS 9.1Not KEV-listedUpdated
Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

CVE-2025-1941 is a Mozilla Firefox Focus for Android issue where an opt-in lock screen authentication requirement could be bypassed. Users relying on that setting may have had browser access exposed despite expecting authentication. Mozilla states it was fixed in Firefox 136.

Executive priority

Treat as urgent for organizations using Firefox Focus on Android for privacy-sensitive browsing. The fix is available, but source details are limited, so prioritize patch verification over speculative response actions.

Technical view

The source describes an access-control bypass affecting a Focus setting requiring authentication before use, distinct from CVE-2025-0245. It is mapped to CWE-284 and scored CVSS 9.1 critical with high confidentiality and integrity impact. The bundle does not provide root cause details or exploit mechanics.

Likely exposure

Exposure is most relevant to Android environments using Firefox Focus and relying on its authentication-before-use lock screen setting. The source bundle does not clearly enumerate all affected versions beyond stating the fix was in Firefox 136.

Exploitation context

The bundle does not cite active exploitation, and KEV status is false. Bug details are referenced, but no exploit status, public proof-of-concept, or observed attack reporting is provided in the supplied sources.

Researcher notes

The supplied record is sparse and internally imprecise on affected product/version naming. Analysis should stay anchored to Mozilla’s advisory and CVE text. Do not assume broader Firefox desktop or non-Android exposure without vendor confirmation.

Mitigation direction

  • Update affected Mozilla Firefox Focus/Firefox Android deployments to the Firefox 136 fixed release or later.
  • Check Mozilla advisory guidance for exact affected-version and platform details.
  • Prioritize managed Android devices where browser privacy controls protect sensitive workflows.
  • Temporarily reduce reliance on the Focus lock screen setting for sensitive access until patched.

Validation and detection

  • Inventory Android devices with Firefox Focus or Mozilla Firefox packages installed.
  • Confirm installed versions are at Firefox 136 fixed level or later.
  • Review mobile device management records for update deployment coverage.
  • Validate whether the authentication-before-use setting was relied upon by users or policy.
  • Monitor Mozilla advisories for corrected affected-version details or follow-up guidance.
Prepared
Confidence
medium
Sources
4

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 · medium confidence lookup

CWE-284: Authorization and privilege behavior lookup

Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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-2025-1941 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
Critical
CVSS
9.1 (3.1)
Known Exploited
No
Published

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

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
3Timeline events
1ADP providers
3Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: yesTechnical Impact: total

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
9.1CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N3.95.2CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

9.1Critical
CVSS 3.1 vector shape for CVE-2025-1941Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
cvssV3_1other:ssvc
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
MozillaFirefox136Listed
Weakness

CWE details

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

CWE-284 · source CWE mapping

Improper Access Control

Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.