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01 Record

CVE-2023-3600

Use-after-free in workers

UnratedPUBLISHEDCNA: mozilla
CNA base scoreUnratedNo CNA CVSS vector

02 Description

Use-after-free in workers

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.63% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 50.2% of scored records. A rank, not a probability.
NVD base score
8.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-10-23.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2023-07-12 13:45Z3 YR AGO
Last updated
2025-12-18 15:22Z10 MO AGO
Reserved
2023-07-10
Assigning CNA
mozilla
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
Data version
5.2
Document digest
564fe7c88ac30a6dc95819525e001c6460082b85db5c1fb77bbd265025337e97

05 Affected products

VendorProductVersionsPlatforms
MozillaFirefox< 115.0.2—
MozillaFirefox ESR< 115.0.2—
MozillaThunderbird< 115.0.1—

06 References

07 Fixed in

AlmaLinux 9

  • firefox
    Fixed in 115.3.1-1.el9_2.alma.1
  • firefox-x11
    Fixed in 115.3.1-1.el9_2.alma.1
  • thunderbird
    Fixed in 115.3.1-1.el9_2.alma

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • firefox
    Fixed in 115.3.1-1.el9_2.alma.1
  • firefox-x11
    Fixed in 115.3.1-1.el9_2.alma.1
  • thunderbird
    Fixed in 115.3.1-1.el9_2.alma

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • firefox
    Fixed in 115.0.2+build1-0ubuntu0.20.04.1
  • thunderbird
    Fixed in 1:115.3.1+build1-0ubuntu0.20.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • thunderbird
    Fixed in 1:115.3.1+build1-0ubuntu0.22.04.2

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.