CVE-2025-11714: Memory safety bugs fixed in Firefox ESR 115.29, Firefox ESR 140.4, Thunderbird ESR 140.4, Firefox 144 and Thunderbird 144

Published Oct 14, 2025
·
Updated

Memory safety bugs present in Firefox ESR 115.28, Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird 143. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.

Affected Software

10 affected componentsFixes available
Mozilla Firefox ESR<115.29
115.29
Mozilla Thunderbird<140.4
140.4
Mozilla Firefox ESR<140.4
140.4
Mozilla Firefox<144
144
Mozilla Thunderbird<144
144
Mozilla Firefox<115.29.0
Mozilla Firefox<144.0
Mozilla Firefox>=116.0<140.4.0
Mozilla Thunderbird<140.4.0
Mozilla Thunderbird>=141.0<144.0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 115.29
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 140.4
  3. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 144
  4. Upgrade

    Upgrade Mozilla Firefox to a version that resolves this vulnerability.

    Fixed in 144
  5. Upgrade

    Upgrade Mozilla Firefox ESR to a version that resolves this vulnerability.

    Fixed in 115.29
  6. Upgrade

    Upgrade Mozilla Firefox ESR to a version that resolves this vulnerability.

    Fixed in 140.4
  7. Upgrade

    Upgrade Mozilla Thunderbird to a version that resolves this vulnerability.

    Fixed in 144
  8. Upgrade

    Upgrade Mozilla Thunderbird ESR to a version that resolves this vulnerability.

    Fixed in 140.4

Event History

Oct 14, 2025
CVE Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
Updated
via Mozilla·12:00 AM
Affected Software
CVE Published
via MITRE·12:27 PM
Data Sourced
via MITRE·12:27 PM
Description
Data Sourced
via Red Hat·01:01 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·01:15 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2025-11714?

CVE-2025-11714 is considered to be a high severity vulnerability due to potential memory corruption that could allow arbitrary code execution.

2

How do I fix CVE-2025-11714?

To fix CVE-2025-11714, update to Firefox ESR 115.29, Firefox ESR 140.4, Thunderbird 140.4, Firefox 144, or Thunderbird 144.

3

Which versions are affected by CVE-2025-11714?

CVE-2025-11714 affects Firefox ESR 115.28, Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143, and Thunderbird 143.

4

Is CVE-2025-11714 exploitable?

While CVE-2025-11714 displays evidence of memory corruption, exploitation for arbitrary code execution is presumed but not confirmed.

5

Who is the vendor for CVE-2025-11714?

The vendor for CVE-2025-11714 is Mozilla, which develops Firefox and Thunderbird.

Company

Resources

Contact

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