Use-after-free in workers

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Summary

CVECVE-2023-3600
StatePUBLISHED
Assignermozilla
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-07-12 14:15:10 UTC
Updated2026-10-23 23:10:00 UTC
DescriptionDuring the worker lifecycle, a use-after-free condition could have occurred, which could have led to a potentially exploitable crash. This vulnerability affects Firefox < 115.0.2, Firefox ESR < 115.0.2, and Thunderbird < 115.0.1.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 0.006340000 probability, percentile 0.497400000 (date 2026-10-23)

Problem Types: CWE-416

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Mozilla Firefox All All All All
Application Mozilla Firefox Esr All All All All
Application Mozilla Thunderbird All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Mozilla Firefox affected unspecified 115.0.2 custom Not specified
CNA Mozilla Firefox ESR affected unspecified 115.0.2 custom Not specified
CNA Mozilla Thunderbird affected unspecified 115.0.1 custom Not specified

References

ReferenceSourceLinkTags
Security Vulnerabilities fixed in Thunderbird 115.0.1 — Mozilla af854a3a-2127-422b-91ae-364da2661108 www.mozilla.org Vendor Advisory
Access Denied af854a3a-2127-422b-91ae-364da2661108 bugzilla.mozilla.org Issue Tracking, Permissions Required, Vendor Advisory
Security Vulnerabilities fixed in Firefox 115.0.2 and Firefox ESR 115.0.2 — Mozilla af854a3a-2127-422b-91ae-364da2661108 www.mozilla.org Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Andrew McCreight (en)

Legacy QID Mappings

  • 160952 Oracle Enterprise Linux Security Update for thunderbird (ELSA-2023-5435)
  • 160954 Oracle Enterprise Linux Security Update for firefox (ELSA-2023-5434)
  • 160959 Oracle Enterprise Linux Security Update for firefox (ELSA-2023-5433)
  • 160961 Oracle Enterprise Linux Security Update for thunderbird (ELSA-2023-5428)
  • 160972 Oracle Enterprise Linux Security Update for thunderbird (ELSA-2023-5475)
  • 160976 Oracle Enterprise Linux Security Update for firefox (ELSA-2023-5477)
  • 199460 Ubuntu Security Notification for Firefox Vulnerability (USN-6218-1)
  • 199794 Ubuntu Security Notification for Thunderbird Vulnerabilities (USN-6405-1)
  • 242088 Red Hat Update for thunderbird (RHSA-2023:5429)
  • 242089 Red Hat Update for thunderbird (RHSA-2023:5438)
  • 242090 Red Hat Update for firefox (RHSA-2023:5433)
  • 242091 Red Hat Update for thunderbird (RHSA-2023:5435)
  • 242092 Red Hat Update for firefox (RHSA-2023:5427)
  • 242093 Red Hat Update for firefox (RHSA-2023:5437)
  • 242094 Red Hat Update for thunderbird (RHSA-2023:5439)
  • 242095 Red Hat Update for thunderbird (RHSA-2023:5430)
  • 242096 Red Hat Update for firefox (RHSA-2023:5436)
  • 242097 Red Hat Update for firefox (RHSA-2023:5434)
  • 242098 Red Hat Update for firefox (RHSA-2023:5426)
  • 242099 Red Hat Update for thunderbird (RHSA-2023:5432)
  • 242100 Red Hat Update for firefox (RHSA-2023:5440)
  • 242101 Red Hat Update for thunderbird (RHSA-2023:5428)
  • 242108 Red Hat Update for thunderbird (RHSA-2023:5475)
  • 242115 Red Hat Update for firefox (RHSA-2023:5477)
  • 378656 Mozilla Firefox Multiple Vulnerabilities (MFSA2023-26)
  • 378657 Mozilla Firefox ESR Multiple Vulnerabilities (MFSA2023-26)
  • 378685 Mozilla Thunderbird Multiple Vulnerabilities (MFSA2023-27)
  • 503458 Alpine Linux Security Update for firefox-esr
  • 506066 Alpine Linux Security Update for firefox-esr
  • 710875 Gentoo Linux Mozilla Thunderbird Multiple Vulnerabilities (GLSA 202402-25)
  • 754208 SUSE Enterprise Linux Security Update for MozillaFirefox (SUSE-SU-2023:2960-1)
  • 754209 SUSE Enterprise Linux Security Update for MozillaFirefox (SUSE-SU-2023:2959-1)
  • 754210 SUSE Enterprise Linux Security Update for MozillaFirefox (SUSE-SU-2023:2958-1)
  • 941287 AlmaLinux Security Update for thunderbird (ALSA-2023:5435)
  • 941288 AlmaLinux Security Update for firefox (ALSA-2023:5434)
  • 961025 Rocky Linux Security Update for thunderbird (RLSA-2023:5428)
  • 961027 Rocky Linux Security Update for thunderbird (RLSA-2023:5435)

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