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Critical 9.8Published Jun 11, 2018
CVE-2016-9063An integer overflow during the parsing of XML using the Expat library.
Updated under an hour ago ()
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It affects Mozilla Firefox and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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An integer overflow during the parsing of XML using the Expat library. This vulnerability affects Firefox < 50.
- CVSS
- 9.8 CRITICAL (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mozilla
- NVD analysis
- Modified
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Mozilla Firefox mozilla:firefox (from the name) | from unspecified before 50 | CNA record |
mozilla firefox mozilla:firefox | before 50 | NVD |
debian debian_linux debian:debian_linux | 8.0; 9.0; 10.0 | NVD |
python python python:python | from 2.7.0 before 2.7.15; from 3.3.0 before 3.3.7; from 3.4.0 before 3.4.7; from 3.5.0 before 3.5.4; from 3.6.0 before 3.6.2 | NVD |
References
- https://www.debian.org/security/2017/dsa-3898vendor-advisory, x-refsource-debian
- http://www.securityfocus.com/bid/94337vdb-entry, x-refsource-bid
- https://bugzilla.mozilla.org/show_bug.cgi?id=1274777x-refsource-confirm
- http://www.securitytracker.com/id/1037298vdb-entry, x-refsource-sectrack
- http://www.securitytracker.com/id/1039427vdb-entry, x-refsource-sectrack
- https://www.mozilla.org/security/advisories/mfsa2016-89/x-refsource-confirm
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.