Integer overflow in Mozilla Firefox
CVE-2016-9063
An integer overflow during the parsing of XML using the Expat library. This vulnerability affects Firefox < 50.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.055 (92.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.055 · newest: 0.055 · change: 0.000
Affected products
- Mozilla Firefox — versions unspecified
- Python
- Debian Linux — versions 8.0, 9.0, 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.debian.org/security/2017/dsa-3898 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/94337 (VDB Entry, Third Party Advisory, vdb-entry)
- bugzilla.mozilla.org/show_bug.cgi (Issue Tracking, Vendor Advisory)
- www.securitytracker.com/id/1037298 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1039427 (VDB Entry, Third Party Advisory, vdb-entry)
- www.mozilla.org/security/advisories/mfsa2016-89/ (Vendor Advisory)
Frequently asked questions
- What is CVE-2016-9063?
- CVE-2016-9063 is a critical-severity vulnerability in Mozilla Firefox, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2018-06-11.
- How severe is CVE-2016-9063?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2016-9063 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.