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Fencer Intel
high 7.5

CVE-2025-10535 json

Information disclosure, mitigation bypass in the Privacy component in Firefox for Android

published last yr. modified last mo. also EUVD-2025-29553

cvss
7.5
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 24%
public exploits
0
none known

Summary

Information disclosure, mitigation bypass in the Privacy component in Firefox for Android. This vulnerability was fixed in Firefox 143.

Patch / fix

  • mozilla firefox 143
  • mozilla firefox_esr 143
  • firefox-esr openSUSE Tumbleweed 153.0-1.1
  • MozillaFirefox openSUSE Tumbleweed 143.0-1.1

opensuse advisories openSUSE-SU-2026:11373-1openSUSE-SU-2025:15565-1

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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-2025-10535 updated cvss 3.4

firefox: Information disclosure, mitigation bypass in the Privacy component in Firefox for Android

  • Red Hat Enterprise Linux 9 firefox, firefox-x11, firefox 140.17.0-1.el10_2 Red Hat Enterprise Linux 10 firefox 140.17.0-1.el10_2
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Enterprise Linux 6 firefox, firefox 140.17.0-1.el10_2 Red Hat Enterprise Linux 7 firefox, firefox 140.17.0-1.el10_2 Red Hat Enterprise Linux 8 firefox, firefox 140.17.0-1.el10_2 Red Hat Enterprise Linux 10 firefox-flatpak
    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
none
Automatable
yes
Technical impact
partial
Assessed
last yr.

Exploit prediction

0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

  • Mozilla Firefox

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Intel 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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.