CVE-2025-5263

MEDIUM EPSS 10.3%
Published May 27, 20251y ago · Modified Jun 17, 20261w ago
4.3 CVSS 3.1
Medium
Find Similar
Published May 27, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

Error handling for script execution was incorrectly isolated from web content, which could have allowed cross-origin leak attacks. This vulnerability was fixed in Firefox 139, Firefox ESR 115.24, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.

CVSS Details

Base Score
4.3
Exploitability
2.8
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Low
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
10.3% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-346

Affected Products 3

VendorProductVersionRange
mozillafirefox* <115.24.0
mozillafirefox* <139.0
mozillafirefox*≥116.0  –  <128.11.0

References 8

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1960745
    Permissions Required
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/05/msg00043.html
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/05/msg00046.html
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-42/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-43/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-44/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-45/
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-46/

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.