CVE catalog

CVE-2018-15127

libvncserver: CVE-2018-15127

Severity: Critical · CVSS 9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: Dec 19, 2018, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 15.09% · Oct 25, 2026

LibVNC before commit 502821828ed00b4a2c4bef90683d0fd88ce495de contains heap out-of-bound write vulnerability in server code of file transfer extension that can result remote code execution

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	libvncserver	sid	`0.9.15+dfsg-6`	fixed
Debian	libvncserver	forky	`0.9.15+dfsg-6`	fixed
Debian	libvncserver	trixie	`0.9.15+dfsg-1+deb13u2`	fixed
Debian	libvncserver	bookworm	`0.9.14+dfsg-1+deb12u2`	fixed
Ubuntu	italc	18.04	`1:3.0.3+dfsg1-1`	vulnerable
Ubuntu	italc	18.04	`1:3.0.3+dfsg1-2`	vulnerable
Ubuntu	italc	18.04	`1:3.0.3+dfsg1-2build1`	vulnerable
Ubuntu	italc	18.04	`1:3.0.3+dfsg1-2ubuntu1`	vulnerable
Ubuntu	italc	18.04	`1:3.0.3+dfsg1-3`	vulnerable
Ubuntu	italc	18.04	`1:3.0.3+dfsg1-3ubuntu0.1`	fixed
Ubuntu	libvncserver	14.04	`0.9.9+dfsg-1`	vulnerable
Ubuntu	libvncserver	14.04	`0.9.9+dfsg-1ubuntu1`	vulnerable
Ubuntu	libvncserver	14.04	`0.9.9+dfsg-1ubuntu1.1`	vulnerable
Ubuntu	libvncserver	14.04	`0.9.9+dfsg-1ubuntu1.2`	vulnerable
Ubuntu	libvncserver	14.04	`0.9.9+dfsg-1ubuntu1.3`	vulnerable
Ubuntu	libvncserver	14.04	`0.9.9+dfsg-1ubuntu1.4`	fixed
Ubuntu	italc	16.04	`1:2.0.2+dfsg1-3`	vulnerable
Ubuntu	italc	16.04	`1:2.0.2+dfsg1-4`	vulnerable
Ubuntu	italc	16.04	`1:2.0.2+dfsg1-4ubuntu0.1`	fixed
Ubuntu	libvncserver	16.04	`0.9.10+dfsg-3`	vulnerable
Ubuntu	libvncserver	16.04	`0.9.10+dfsg-3build1`	vulnerable
Ubuntu	libvncserver	16.04	`0.9.10+dfsg-3ubuntu0.16.04.1`	vulnerable
Ubuntu	libvncserver	16.04	`0.9.10+dfsg-3ubuntu0.16.04.2`	vulnerable
Ubuntu	libvncserver	16.04	`0.9.10+dfsg-3ubuntu0.16.04.3`	fixed
Ubuntu	italc	18.04	`1:3.0.3+dfsg1-1`	vulnerable
Ubuntu	italc	18.04	`1:3.0.3+dfsg1-2`	vulnerable
Ubuntu	italc	18.04	`1:3.0.3+dfsg1-2build1`	vulnerable
Ubuntu	italc	18.04	`1:3.0.3+dfsg1-2ubuntu1`	vulnerable
Ubuntu	italc	18.04	`1:3.0.3+dfsg1-3`	vulnerable
Ubuntu	italc	18.04	`1:3.0.3+dfsg1-3ubuntu0.1`	fixed
Ubuntu	libvncserver	18.04	`0.9.11+dfsg-1`	vulnerable
Ubuntu	libvncserver	18.04	`0.9.11+dfsg-1ubuntu1`	vulnerable
Ubuntu	libvncserver	18.04	`0.9.11+dfsg-1ubuntu1.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	libvncserver	source	sid	`0.9.11+dfsg-1.2`	not yet assigned	Not reported	[916941]
Debian	libvncserver	source	forky	`0.9.11+dfsg-1.2`	not yet assigned	Not reported	[916941]
Debian	libvncserver	source	trixie	`0.9.11+dfsg-1.2`	not yet assigned	Not reported	[916941]
Debian	libvncserver	source	bookworm	`0.9.11+dfsg-1.2`	not yet assigned	Not reported	[916941]
Ubuntu	italc	deb	18.04	`1:3.0.3+dfsg1-3ubuntu0.1`	Not reported	USN-4547-1	Not reported
Ubuntu	libvncserver	deb	14.04	`0.9.9+dfsg-1ubuntu1.4`	Not reported	UBUNTU-CVE-2018-15127	Not reported
Ubuntu	italc	deb	16.04	`1:2.0.2+dfsg1-4ubuntu0.1`	Not reported	UBUNTU-CVE-2018-15127	Not reported
Ubuntu	libvncserver	deb	16.04	`0.9.10+dfsg-3ubuntu0.16.04.3`	Not reported	UBUNTU-CVE-2018-15127	Not reported
Ubuntu	italc	deb	18.04	`1:3.0.3+dfsg1-3ubuntu0.1`	Not reported	UBUNTU-CVE-2018-15127	Not reported
Ubuntu	libvncserver	deb	18.04	`0.9.11+dfsg-1ubuntu1.1`	Not reported	UBUNTU-CVE-2018-15127	Not reported

[Debian bug #916941]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libvncclient1]Fixed
Source package: [libvncserver]
Details (2)
- 0.9.14+dfsg-1+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 0.9.11+dfsg-1.2
  dsa · libvncserver · debian · bookworm; dsa · libvncserver · debian · 12
- 0.9.14+dfsg-1+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 0.9.11+dfsg-1.2
  dsa · libvncserver · debian · bookworm; dsa · libvncserver · debian · 12
[libvncserver1]Fixed
Source package: [libvncserver]
Details (2)
- 0.9.14+dfsg-1+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 0.9.11+dfsg-1.2
  dsa · libvncserver · debian · bookworm; dsa · libvncserver · debian · 12
- 0.9.14+dfsg-1+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 0.9.11+dfsg-1.2
  dsa · libvncserver · debian · bookworm; dsa · libvncserver · debian · 12
[libvncserver-dev]Fixed
Source package: [libvncserver]
Details (2)
- 0.9.14+dfsg-1+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 0.9.11+dfsg-1.2
  dsa · libvncserver · debian · bookworm; dsa · libvncserver · debian · 12
- 0.9.14+dfsg-1+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 0.9.11+dfsg-1.2
  dsa · libvncserver · debian · bookworm; dsa · libvncserver · debian · 12

[Debian 13 (Trixie)]

[libvncclient1]Fixed
Source package: [libvncserver]
Details (2)
- 0.9.15+dfsg-1+deb13u2 · amd64 · trixie
  Fixed · Fixed: 0.9.11+dfsg-1.2
  dsa · libvncserver · debian · 13
- 0.9.15+dfsg-1+deb13u2 · arm64 · trixie
  Fixed · Fixed: 0.9.11+dfsg-1.2
  dsa · libvncserver · debian · 13
[libvncserver1]Fixed
Source package: [libvncserver]
Details (2)
- 0.9.15+dfsg-1+deb13u2 · amd64 · trixie
  Fixed · Fixed: 0.9.11+dfsg-1.2
  dsa · libvncserver · debian · 13
- 0.9.15+dfsg-1+deb13u2 · arm64 · trixie
  Fixed · Fixed: 0.9.11+dfsg-1.2
  dsa · libvncserver · debian · 13
[libvncserver-dev]Fixed
Source package: [libvncserver]
Details (2)
- 0.9.15+dfsg-1+deb13u2 · amd64 · trixie
  Fixed · Fixed: 0.9.11+dfsg-1.2
  dsa · libvncserver · debian · 13
- 0.9.15+dfsg-1+deb13u2 · arm64 · trixie
  Fixed · Fixed: 0.9.11+dfsg-1.2
  dsa · libvncserver · debian · 13

Observed: Oct 23, 2026, 5:34:54 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]