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CVE-2026-12308

🗓️ 16 Jun 2026 11:52:41Reported by mozillaType 
cve
 cve
🔗 web.nvd.nist.gov👁 21 Views

CVE-2026-12308 memory safety bug fixed in Firefox 152 and Firefox ESR 140.12.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-12308
16 Jun 202611:52
attackerkb
Amazon
Important: thunderbird
8 Jul 202600:00
amazon
Amazon
Important: firefox
7 Jul 202600:00
amazon
Amazon
Important: firefox
8 Jul 202600:00
amazon
Tenable Nessus
AlmaLinux 8 : firefox (ALSA-2026:27717)
24 Jun 202600:00
nessus
Tenable Nessus
AlmaLinux 10 : firefox (ALSA-2026:27733)
24 Jun 202600:00
nessus
Tenable Nessus
AlmaLinux 9 : firefox (ALSA-2026:27734)
24 Jun 202600:00
nessus
Tenable Nessus
AlmaLinux 9 : thunderbird (ALSA-2026:29940)
26 Jun 202600:00
nessus
Tenable Nessus
AlmaLinux 10 : thunderbird (ALSA-2026:30846)
30 Jun 202600:00
nessus
Tenable Nessus
AlmaLinux 8 : thunderbird (ALSA-2026:33445)
30 Jun 202600:00
nessus
Rows per page
NVD
Node
mozillafirefoxRange<140.12.0esr
OR
mozillafirefoxRange<152.0.0-
OR
mozillathunderbirdRange<140.12.0esr
OR
mozillathunderbirdRange<152.0.0-
[
  {
    "product": "Firefox",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "140.12",
        "lessThanOrEqual": "140.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "152",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  },
  {
    "product": "Thunderbird",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "140.12",
        "lessThanOrEqual": "140.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "152",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  }
]

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18 Jun 2026 19:16Current
5.2Medium risk
Vulners AI Score5.2
CVSS 3.15.3
EPSS0.00261
SSVC
21