CVE-2017-5428

ENISA EUVD: EUVD-2017-14532 ↗
✓ Confirmed 0-Day
Triaged: March 20, 2026 1 article Published: 2018-06-11
VulnLookup ↗ NVD ↗ EUVD ↗ MITRE ↗

EPSS Score

Source: FIRST.org · 2026-05-23
0.37%
probability
This CVE has a 0.37% probability of being exploited in the next 30 days.
0% Top 59.0th percentile of all CVEs 100%

CVSS v3.0

Source: NVD
9.8
CRITICAL
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2 (legacy)

7.5
HIGH
Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
AV:N/AC:L/Au:N/C:P/I:P/A:P

Description

VulnerabilityLookup (CNA)
An integer overflow in "createImageBitmap()" was reported through the Pwn2Own contest. The fix for this vulnerability disables the experimental extensions to the "createImageBitmap" API. This function runs in the content sandbox, requiring a second vulnerability to compromise a user's computer. This vulnerability affects Firefox ESR < 52.0.1 and Firefox < 52.0.1.

Affected Products

Mozilla
Firefox ESR
unspecified
Mozilla
Firefox
unspecified

Attack Intelligence

Signal Intelligence

Confidenceⓘ
75%
EPSS 0.37%
CVSS v3.0 9.8
Mentions 1
Last Seen Mar 20, 2017

CNA Information

CNA Assigner
mozilla

Analyst Note

CVE-2017-5428 was exploited at Pwn2Own (a live hacking competition where zero-days are demonstrated against unpatched systems), and Mozilla patched it within 22 hours of discovery. This aligns with zero-day criteria: exploitation occurred before patch availability, with an extremely tight patch timeline characteristic of zero-day responses.

Triage Info

Decided atMar 20, 2026
Published DateJun 11, 2018