Vulnerability-Lookup

FKIE_CVE-2026-12297

Vulnerability from fkie_nvd - Published: 2026-06-16 13:16 - Updated: 2026-07-15 12:17

Severity

9.6 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Summary

Sandbox escape due to incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.

References

URL	Tags
security@mozilla.org	https://bugzilla.mozilla.org/show_bug.cgi?id=2041610	Permissions Required
security@mozilla.org	https://www.mozilla.org/security/advisories/mfsa2026-57/	Vendor Advisory
security@mozilla.org	https://www.mozilla.org/security/advisories/mfsa2026-58/	Vendor Advisory
security@mozilla.org	https://www.mozilla.org/security/advisories/mfsa2026-59/	Vendor Advisory
security@mozilla.org	https://www.mozilla.org/security/advisories/mfsa2026-60/	Vendor Advisory
security@mozilla.org	https://www.mozilla.org/security/advisories/mfsa2026-61/	Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:27717
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:27733
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:27734
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:29940
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:30846
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:33445
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:36100
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:36101
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:36102
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:36103
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:37210
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:37391
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:38506
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:38750
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:38751
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:38753
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:39011
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:39141
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:39142
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:39428
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:39706
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/security/cve/CVE-2026-12297
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://bugzilla.redhat.com/show_bug.cgi?id=2489235
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12297.json

Impacted products

Vendor	Product	Version
mozilla	firefox	*
mozilla	firefox	*
mozilla	firefox	*
mozilla	thunderbird	*
mozilla	thunderbird	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Firefox",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThanOrEqual": "115.*",
              "status": "unaffected",
              "version": "115.37",
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            },
            {
              "lessThanOrEqual": "140.*",
              "status": "unaffected",
              "version": "140.12",
              "versionType": "rpm"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "152",
              "versionType": "rpm"
            }
          ]
        },
        {
          "product": "Thunderbird",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThanOrEqual": "140.*",
              "status": "unaffected",
              "version": "140.12",
              "versionType": "rpm"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "152",
              "versionType": "rpm"
            }
          ]
        }
      ],
      "source": "security@mozilla.org"
    },
    {
      "affectedData": [
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          ],
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          "vendor": "Red Hat",
          "versions": [
            {
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              "versionType": "rpm"
            }
          ]
        },
        {
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          "product": "Red Hat Enterprise Linux 10",
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          "versions": [
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      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
    }
  ],
  "configurations": [
    {
      "nodes": [
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}

CVE-2026-12297 (GCVE-0-2026-12297)

Vulnerability from cvelistv5 – Published: 2026-06-16 11:52 – Updated: 2026-07-15 11:48

Title

Sandbox escape due to incorrect boundary conditions in the Networking component

Summary

Severity

9.6 (Critical)


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

7.5 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-653 - Improper Isolation or Compartmentalization

Assigner

mozilla

References

30 references

URL	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=2041610
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://access.redhat.com/security/cve/CVE-2026-12297	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2489235	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:38506	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36100	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:38751	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:27733	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:30846	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:27717	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:33445	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36102	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:39428	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:37210	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:39141	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36103	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:39142	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36101	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:39706	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:39011	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:38753	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:37391	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:38750	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:27734	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29940	vendor-advisoryx_refsource_REDHAT

Impacted products

19 products

Vendor	Product	Version
Mozilla	Firefox	Unaffected: 115.37 , ≤ 115.* (rpm) Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)
Mozilla	Thunderbird	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 0:140.12.0-1.el10_2 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 10.0 Extended Update Support	Unaffected: 0:140.12.0-1.el10_0 , < * (rpm) cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux 7 Extended Lifecycle Support	Unaffected: 0:140.12.0-1.el7_9 , < * (rpm) cpe:/o:redhat:rhel_els:7
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:140.12.0-1.el8_10 , < * (rpm) cpe:/a:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	Unaffected: 0:140.12.0-1.el8_4 , < * (rpm) cpe:/a:redhat:rhel_aus:8.4
Red Hat	Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On	Unaffected: 0:140.12.0-1.el8_4 , < * (rpm) cpe:/a:redhat:rhel_eus_long_life:8.4
Red Hat	Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	Unaffected: 0:140.12.0-1.el8_6 , < * (rpm) cpe:/a:redhat:rhel_aus:8.6
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On	Unaffected: 0:140.12.0-1.el8_6 , < * (rpm) cpe:/a:redhat:rhel_eus_long_life:8.6
Red Hat	Red Hat Enterprise Linux 8.8 Telecommunications Update Service	Unaffected: 0:140.12.0-1.el8_8 , < * (rpm) cpe:/a:redhat:rhel_tus:8.8
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	Unaffected: 0:140.12.0-1.el8_8 , < * (rpm) cpe:/a:redhat:rhel_e4s:8.8
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:140.12.0-1.el9_8 , < * (rpm) cpe:/a:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	Unaffected: 0:140.12.0-1.el9_2 , < * (rpm) cpe:/a:redhat:rhel_e4s:9.2
Red Hat	Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions	Unaffected: 0:140.12.0-1.el9_4 , < * (rpm) cpe:/a:redhat:rhel_e4s:9.4
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support	Unaffected: 0:140.12.0-1.el9_6 , < * (rpm) cpe:/a:redhat:rhel_eus:9.6
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7

Credits

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

FKIE_CVE-2026-12297

CVE-2026-12297 (GCVE-0-2026-12297)

Tags

Sightings

Nomenclature