By displaying a prompt with a long description, the fullscreen notification could have been hidden, resulting in potential user confusion o…

published 2023-06-02 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-29655

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 28%
public exploits: 0; none known

By displaying a prompt with a long description, the fullscreen notification could have been hidden, resulting in potential user confusion or spoofing attacks. <br>*This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 111.

Patch / fix

fixed in 1 distros 2

Mozilla Firefox 111

suse opensuse

MozillaFirefox SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES 15 SP3-LTSS +9 more 102.9.0-150200.152.81.1
MozillaFirefox SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES 12 SP5 +6 more 102.9.0-112.153.1
MozillaFirefox SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLE High Performance Computing 15 SP1-LTSS 102.9.0-150000.150.79.1

suse advisories SUSE-SU-2023:0835-1 SUSE-SU-2023:0763-1 SUSE-SU-2023:0728-1

firefox-esr openSUSE Tumbleweed 128.5.1-1.1
MozillaFirefox openSUSE Tumbleweed 111.0.1-1.1

opensuse advisories openSUSE-SU-2024:14572-1 openSUSE-SU-2024:12839-1

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 21 mo ago (2025-01-09)

Exploit prediction

0.35% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1798798 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
NVD	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Affected products

Mozilla Firefox

Classification

Weakness

CWE-1021 Improper Restriction of Rendered UI Layers or Frames

References

bugzilla.mozilla.org /show_bug.cgi?id=1798798
exploit, issue-tracking, permissions-required, vendor-advisory
mozilla.org /security/advisories/mfsa2023-09/
vendor-advisory

Sources

CVE List CVE-2023-25748
NVD CVE-2023-25748

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.

Summary