What’s Vulnerable › Vulnerabilities

CVE-2016-5271

• Severity: medium (CVSS 6.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-09-22 · updated 2026-06-17
• Weakness: CWE-125

Description

The PropertyProvider::GetSpacingInternal function in Mozilla Firefox before 49.0 allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via text runs in conjunction with a "display: contents" Cascading Style Sheets (CSS) property.

Affected products

• Mozilla Firefox: through 48.0.2

References

• http://www.mozilla.org/security/announce/2016/mfsa2016-85.html
• http://www.securityfocus.com/bid/93052
• http://www.securitytracker.com/id/1036852
• https://bugzilla.mozilla.org/show_bug.cgi?id=1288946
• https://security.gentoo.org/glsa/201701-15
• http://www.mozilla.org/security/announce/2016/mfsa2016-85.html
• http://www.securityfocus.com/bid/93052
• http://www.securitytracker.com/id/1036852
• https://bugzilla.mozilla.org/show_bug.cgi?id=1288946
• https://security.gentoo.org/glsa/201701-15

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