PatchTheCVECVE-2018-3745: atob 2.0.3 and earlier allocates uninitialized Buffers when number is passed in input on Node.js 4.x and below
CVE-2018-3745 is a critical-severity flaw (CVSS 9.1) affecting atob. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
atob 2.0.3 and earlier allocates uninitialized Buffers when number is passed in input on Node.js 4.x and below.
Why this priority
- Critical severity
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.1 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 2.1% (top 18%) |
| CISA exploited list | No |
| Weakness | CWE-125 |
| Published | 2018-05-29 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2018-3745?
atob: upgrade to newer than 2.0.3. Exact commands for each OS are on this page.
Is CVE-2018-3745 being exploited?
CVE-2018-3745 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2018-3745 affect?
CVE-2018-3745 affects atob. Severity is critical (CVSS 9.1). atob 2.0.3 and earlier allocates uninitialized Buffers when number is passed in input on Node.js 4.x and below.
How urgent is CVE-2018-3745?
Priority 62/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action