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CVE-2025-8027 JavaScript engine only wrote partial return value to stack

🗓️ 22 Jul 2025 20:49:24Reported by mozillaType 
cvelist
 cvelist🔗 www.cve.org👁 8 Views

CVE-2025-8027 affects Firefox and Thunderbird on 64-bit platforms with JIT vulnerabilities.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
FreeBSD		Mozilla -- IonMonkey-JIT bad stack write
22 Jul 202500:00
–freebsd
ATTACKERKB		CVE-2025-8027
22 Jul 202520:49
–attackerkb
Tenable Nessus		Amazon Linux 2023 : firefox (ALAS2023-2025-1148)
18 Aug 202500:00
–nessus
Tenable Nessus		Amazon Linux 2 : thunderbird (ALAS-2025-2946)
4 Aug 202500:00
–nessus
Tenable Nessus		Amazon Linux 2 : firefox (ALASFIREFOX-2025-041)
4 Aug 202500:00
–nessus
Tenable Nessus		AlmaLinux 8 : firefox (ALSA-2025:11747)
30 Jul 202500:00
–nessus
Tenable Nessus		AlmaLinux 9 : firefox (ALSA-2025:11748)
30 Jul 202500:00
–nessus
Tenable Nessus		AlmaLinux 10 : firefox (ALSA-2025:11797)
9 Oct 202500:00
–nessus
Tenable Nessus		AlmaLinux 9 : thunderbird (ALSA-2025:12187)
30 Jul 202500:00
–nessus
Tenable Nessus		AlmaLinux 10 : thunderbird (ALSA-2025:12188)
9 Oct 202500:00
–nessus
Rows per page
[
  {
    "product": "Firefox",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "115.26",
        "lessThanOrEqual": "115.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "128.13",
        "lessThanOrEqual": "128.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "140.1",
        "lessThanOrEqual": "140.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "141",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  },
  {
    "product": "Thunderbird",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "128.13",
        "lessThanOrEqual": "128.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "140.1",
        "lessThanOrEqual": "140.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "141",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  }
]

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EPSS0.00489
cve-2025-8027 firefox vulnerability jit issue 64-bit platforms thunderbird
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