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CVE-2016-1960

Integer underflow in the nsHtml5TreeBuilder class in the HTML5 string parser in Mozilla Firefox before 45.0 and Firefox ESR 38.x before…

High8.8Public exploitEPSS 30.9%
Published
Updated
Reserved
Assigned by
mozilla

Description

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.

Public exploit

2 references of the record are tagged as an exploit or proof of concept: anyone can try it against an unpatched system.

Timeline

  1. ID reserved

    By mozilla

  2. · 53 days later

    Published

  3. · 8 years later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2016-1960, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.0High8.8CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
30.9% · top 1.7% of all CVEs (8 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.

Weakness

  • n/a

Affected products

  • n/a

    • affected n/a

References (25)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

CVE-2016-1960 badge
[![CVE-2016-1960](https://cveledger.app/badge/CVE-2016-1960.svg)](https://cveledger.app/cve/CVE-2016-1960)

Record last updated .