Dashboard / CVE-2026-16377

CVE-2026-16377

CRITICAL
INFO Priority: 0.06 BB Relevance: 80/100
Published: 2026-07-21 Modified: 2026-10-24 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: High
A: High

Description

Mitigation bypass in the PDF Viewer component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
mozilla firefox < 140.13.0
mozilla firefox < 153.0.0
mozilla thunderbird < 140.13.0
mozilla thunderbird 141.0 – 153.0

References & Advisories (5)

Bug Bounty Relevance

80 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.57%
Raw Score 0.005680
Percentile 47.0%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00568
2026-10-28
0.00568

Intelligence Sources

nvd ref →

External Links