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CVE-2025-6436

🗓️ 24 Jun 2025 12:28:04Reported by mozillaType 
cve
 cve
🔗 web.nvd.nist.gov📰️ 2 Media mentions👁 169 Views

Memory safety bugs in Firefox 139 and Thunderbird 139 may allow arbitrary code execution.

Related
Detection
Affected
Refs
Social
ReporterTitlePublishedViews
Family
freebsd
FreeBSD
firefox -- multiple vulnerabilities
24 Jun 202500:00
–freebsd
attackerkb
attackerkb
CVE-2025-6436
24 Jun 202512:28
–attackerkb
alpinelinux
AlpineLinux
CVE-2025-6436
24 Jun 202513:15
–alpinelinux
astralinux
AstraLinux
Astra Linux – Vulnerability in Firefox
16 Jun 202511:28
–astralinux
bdu_fstec
BDU FSTEC
Mozilla Firefox Thunderbird Heap Buffer Overflow
27 Jun 202500:00
–bdu_fstec
cgr
Chainguard
CVE-2025-6436 vulnerabilities
1 Jul 202614:16
–cgr
circl
Circl
CVE-2025-6436
24 Jun 202517:05
–circl
cnnvd
CNNVD
Mozilla Firefox security vulnerabilities
24 Jun 202500:00
–cnnvd
cvelist
Cvelist
CVE-2025-6436 Memory safety bugs fixed in Firefox 140 and Thunderbird 140
24 Jun 202512:28
–cvelist
debiancve
Debian CVE
CVE-2025-6436
24 Jun 202512:28
–debiancve
Rows per page
NVD
Node
OR
mozillafirefoxRange<140.0
[
  {
    "product": "Firefox",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "140",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  },
  {
    "product": "Thunderbird",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "140",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  }
]

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30 Sep 2026 18:10Current
8.1High risk
Vulners AI Score8.1
CVSS 3.18.1
EPSS0.04256
SSVC
169