CVE-2026-109740

CVSS: UnknownDeferred
AliasesDEBIAN-CVE-2026-109740
Published 2026-10-13Last modified 2026-10-13
Open JSON

Vulnerability summary

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.16%
0%100%
Low · Change unavailable
KEVNot listed0 of 3 catalogs
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2026:12116-1

Timeline

  1. 2026-10-13
    PublishedVulnerability first disclosed.
  2. 2026-10-13
    Last modifiedVulnerability information updated.

Description

Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

2026-10-142026-10-15
EPSS score
0.16%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Debian1 product
  • firefox-esrAll versions (No fix recorded)

1 vendor · 1 product

References

6 links