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CVE-2025-6427

🗓️ 24 Jun 2025 12:28:01Reported by mozillaType 
cve
 cve
🔗 web.nvd.nist.gov👁 153 Views

An attacker could bypass Content Security Policy in Firefox < 140 by manipulating subdocuments.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
freebsd
FreeBSD
firefox -- multiple vulnerabilities
24 Jun 202500:00
–freebsd
attackerkb
attackerkb
CVE-2025-6427
24 Jun 202512:28
–attackerkb
alpinelinux
AlpineLinux
CVE-2025-6427
24 Jun 202513:15
–alpinelinux
astralinux
AstraLinux
Astra Linux – Vulnerability in Firefox
16 Jun 202511:28
–astralinux
bdu_fstec
BDU FSTEC
Mozilla Firefox Content Security Policy
27 Jun 202500:00
–bdu_fstec
cgr
Chainguard
CVE-2025-6427 vulnerabilities
1 Jul 202614:16
–cgr
circl
Circl
CVE-2025-6427
25 Jun 202514:51
–circl
cnnvd
CNNVD
Mozilla Firefox security vulnerabilities
24 Jun 202500:00
–cnnvd
cnvd
CNVD
Mozilla Firefox Security Bypass Vulnerability (CNVD-2025-15499)
4 Jul 202500:00
–cnvd
cvelist
Cvelist
CVE-2025-6427 connect-src Content Security Policy restriction could be bypassed
24 Jun 202512:28
–cvelist
Rows per page
NVD
Node
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
8High risk
Vulners AI Score8
CVSS 3.19.1
EPSS0.00368
SSVC
153