CVE catalog

CVE-2018-7166

nodejs: CVE-2018-7166

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published: Aug 11, 2018, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 3.29% · Oct 25, 2026

In all versions of Node.js 10 prior to 10.9.0, an argument processing flaw can cause `Buffer.alloc()` to return uninitialized memory. This method is intended to be safe and only return initialized, or cleared, memory. The third argument specifying `encoding` can be passed as a number, this is misinterpreted by `Buffer's` internal "fill" method as the `start` to a fill operation. This flaw may be abused where `Buffer.alloc()` arguments are derived from user input to return uncleared memory blocks that may contain sensitive information.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	nodejs	sid	`24.22.1+dfsg+~cs24.19.2-1`	not affected
Debian	nodejs	forky	`24.21.0+dfsg+~cs24.13.4-1`	not affected
Debian	nodejs	trixie	`20.19.2+dfsg-1+deb13u2`	not affected
Debian	nodejs	trixie-security	`20.19.2+dfsg-1+deb13u3`	not affected
Debian	nodejs	bookworm	`18.20.4+dfsg-1~deb12u2`	not affected
Debian	nodejs	bookworm-security	`18.20.4+dfsg-1~deb12u3`	not affected
Cpe	node.js	Not reported	`10.9.0`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	nodejs	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	nodejs	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	nodejs	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	nodejs	source	bookworm	`Not affected`	unimportant	Not reported	Not reported
Cpe	node.js	cpe	Not reported	`10.9.0`	Not reported	NVD-CVE-2018-7166	Not reported

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[libnode108]Unknown
Source package: [nodejs]
Details (4)
- 18.20.4+dfsg-1~deb12u2 · amd64 · bookworm
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · arm64 · bookworm
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · amd64 · bookworm-security
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · arm64 · bookworm-security
  Not affected
  dsa · nodejs · debian · bookworm
[libnode-dev]Unknown
Source package: [nodejs]
Details (4)
- 18.20.4+dfsg-1~deb12u2 · amd64 · bookworm
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · arm64 · bookworm
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · amd64 · bookworm-security
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · arm64 · bookworm-security
  Not affected
  dsa · nodejs · debian · bookworm
[nodejs]Unknown
Details (4)
- 18.20.4+dfsg-1~deb12u2 · amd64 · bookworm
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · arm64 · bookworm
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · amd64 · bookworm-security
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · arm64 · bookworm-security
  Not affected
  dsa · nodejs · debian · bookworm
[nodejs-doc]Unknown
Source package: [nodejs]
Details (4)
- 18.20.4+dfsg-1~deb12u2 · all · bookworm
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · all · bookworm
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  dsa · nodejs · debian · bookworm

Observed: Oct 23, 2026, 5:37:37 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX]