SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-3745

atob 2.0.3 and earlier allocates uninitialized Buffers when number is passed in input on Node.js 4.x and below.

CRITICAL 9.1EPSS 2.14%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (2.14%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

atob 2.0.3 and earlier allocates uninitialized Buffers when number is passed in input on Node.js 4.x and below.

CVSS 3.1
9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
EPSS
2.14% probability · 82th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-125
Affected
atob project/atob
Source
support@hackerone.com
EPSS trend
0%3%5%27 October 2026: 2.14%27 October 202627 October 2026

EPSS 2.1% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.