Review reviewHigh

CVE-2026-16373

Mozilla Firefox, firefox mobile

Information disclosure in the Privacy component in Firefox for Android. This vulnerability was fixed in Firefox 153.

CVSS
7.5
EPSS
0.27%
19.4% percentile
CISA KEV
Not listed
Published
2026.07.21
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.27%
Technical severityCVSS 7.5

Vulnerability overview

Information disclosure in the Privacy component in Firefox for Android. This vulnerability was fixed in Firefox 153.

Affected product and versions

Product
Mozilla Firefox, firefox mobile
Affected versions
< 153.0
Fixed versions
153.0

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Mozilla Firefox, firefox mobile and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
CWE-200