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CVE-2016-1960

HIGH · CVSS 8.8EPSS 30.9%EU EUVD

Integer underflow in the nsHtml5TreeBuilder class in the HTML5 string parser in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7 allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) by leveraging mishandling of end tags, as demonstrated by incorrect SVG processing, aka ZDI-CAN-3545.

Key facts

CVSS score
8.8 (v3.0)
Severity
HIGH
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS score
30.9% (98th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2016-3049)
Published
March 13, 2016
NVD last modified
June 17, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2016-3049 in the EU Vulnerability Database. Last updated in EUVD on August 5, 2024.

View on the EU Vulnerability Database

Affected products

  • mozilla / firefox
  • mozilla / firefox
  • mozilla / firefox
  • mozilla / firefox
  • mozilla / firefox
  • mozilla / firefox
  • mozilla / firefox
  • mozilla / firefox
  • mozilla / firefox
  • mozilla / firefox
  • mozilla / firefox
  • mozilla / firefox
  • mozilla / firefox
  • mozilla / firefox
  • mozilla / thunderbird
  • opensuse / leap
  • opensuse / opensuse
  • opensuse / opensuse
  • oracle / linux
  • oracle / linux
  • oracle / linux
  • suse / linux enterprise

Certified products that may be affected

26 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

See all 26 in the Security Certifications Explorer.

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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CVE-2016-1960: HIGH severity (CVSS 8.8)