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Fencer Vulns
medium 5.9

CVE-2022-22746 json

A race condition could have allowed bypassing the fullscreen notification which could have lead to a fullscreen window spoof being unnotice…

published 2022-12-22 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-27889

cvss
5.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits
0
none known

Summary

A race condition could have allowed bypassing the fullscreen notification which could have lead to a fullscreen window spoof being unnoticed.<br>*This bug only affects Firefox for Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.

Patch / fix

  • Mozilla Firefox ESR 91.5
  • Mozilla Firefox 96
  • Mozilla Thunderbird 91.5
  • MozillaThunderbird SLE Workstation Extension 15 SP3 91.5.0-8.51.1
  • MozillaFirefox SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +7 more 91.5.0-150.15.1
  • MozillaFirefox SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLES 15 SP2-BCL +7 more 91.5.0-152.12.1
  • MozillaFirefox SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +11 more 91.5.0-112.86.1
  • MozillaFirefox SLES 11 SP4-LTSS 91.5.0-78.159.1

suse advisories SUSE-SU-2022:0199-1SUSE-SU-2022:14880-1SUSE-SU-2022:0137-1SUSE-SU-2022:0136-1SUSE-SU-2022:0115-1

  • firefox-esr openSUSE Tumbleweed 128.5.1-1.1
  • MozillaFirefox openSUSE Tumbleweed 96.0-1.1
  • MozillaThunderbird openSUSE Tumbleweed 91.5.0-1.1
  • MozillaThunderbird openSUSE Leap 15.3 91.5.0-8.51.1
  • MozillaFirefox openSUSE Leap 15.3 91.5.0-152.12.1
  • civetweb openSUSE Leap 15.3 1.15-lp153.2.3.1

opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:11732-1openSUSE-SU-2024:11733-1openSUSE-SU-2022:0199-1openSUSE-SU-2022:0136-1

  • firefox Alpine 3.23, Alpine 3.22, Alpine 3.21 +5 more 97.0-r0
  • librewolf Alpine 3.24, Alpine 3.23, Alpine 3.22 +1 more 97.0-r0
  • firefox-esr Alpine 3.23, Alpine 3.22, Alpine 3.21 +6 more 91.5.0-r0
  • thunderbird Alpine 3.23, Alpine 3.22, Alpine 3.21 +5 more 91.5.0-r0

alpine advisories ALPINE-CVE-2022-22746

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-22746 updated cvss 7.5

Mozilla: Calling into reportValidity could have lead to fullscreen window spoof

  • Red Hat Enterprise Linux 6 firefox, thunderbird Red Hat Enterprise Linux 7 firefox, thunderbird Red Hat Enterprise Linux 8 firefox, thunderbird
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.62% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CNA 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

  • Mozilla Firefox ESR
  • Mozilla Firefox
  • Mozilla Thunderbird

Classification

Weakness
  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.