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01 Record

CVE-2023-25743

A lack of in app notification for entering fullscreen mode could have lead to a malicious website spoofing browser chrome. *This bug only affects Firefox Focus. Other versions of Firefox are

UnratedPUBLISHEDCNA: mozilla
CNA base scoreUnratedNo CNA CVSS vector

02 Description

A lack of in app notification for entering fullscreen mode could have lead to a malicious website spoofing browser chrome. *This bug only affects Firefox Focus. Other versions of Firefox are

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.64% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 50.9% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-10-24.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2023-06-02 00:00Z3 YR AGO
Last updated
2025-01-09 16:13Z1 YR AGO
Reserved
2023-02-13
Assigning CNA
mozilla
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-290Authentication Bypass by SpoofingBase
  • CWE-357Insufficient UI Warning of Dangerous OperationsBase
Data version
5.1
Document digest
45cae2888d170d99f8ef7170899cb2d6b46969080027810c4c2926cc12456a60

05 Affected products

VendorProductVersionsPlatforms
MozillaFirefox< 110—
MozillaFirefox ESR< 102.8—

06 References

07 Fixed in

AlmaLinux 8

  • firefox
    Fixed in 102.8.0-2.el8_7.alma
  • thunderbird
    Fixed in 102.8.0-2.el8_7.alma

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 9

  • firefox
    Fixed in 102.8.0-2.el9_1.alma
  • firefox-x11
    Fixed in 102.8.0-2.el9_1.alma
  • thunderbird
    Fixed in 102.8.0-2.el9_1.alma

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • firefox
    Fixed in 102.8.0-2.el8_7.alma
  • thunderbird
    Fixed in 102.8.0-2.el8_7.alma

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • firefox
    Fixed in 102.8.0-2.el9_1.alma
  • firefox-x11
    Fixed in 102.8.0-2.el9_1.alma
  • thunderbird
    Fixed in 102.8.0-2.el9_1.alma

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.