CVE-2018-7225
An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive
02 Description
An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 6.10% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 93.1% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2018-02-19 15:00Z8 YR AGO
- Last updated
- 2024-08-05 06:24Z2 YR AGO
- Reserved
- 2018-02-19
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- b3408bbae2a69899eabc0d20b27458eb2bc3c376d00547728aebf4e001b855fd
05 Affected products
06 References
- www.debian.orgDSA-4221https://www.debian.org/security/2018/dsa-4221
- usn.ubuntu.comUSN-3618-1https://usn.ubuntu.com/3618-1/
- github.comhttps://github.com/LibVNC/libvncserver/issues/218
- lists.debian.org[debian-lts-announce] 20180330 [SECURITY] [DLA 1332-1] libvncserver security updatehttps://lists.debian.org/debian-lts-announce/2018/03/msg00035.html
- www.securityfocus.com103107http://www.securityfocus.com/bid/103107
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2018/02/18/1
- access.redhat.comRHSA-2018:1055https://access.redhat.com/errata/RHSA-2018:1055
- security.gentoo.orgGLSA-201908-05https://security.gentoo.org/glsa/201908-05
- lists.debian.org[debian-lts-announce] 20191030 [SECURITY] [DLA 1979-1] italc security updatehttps://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
- lists.debian.org[debian-lts-announce] 20191129 [SECURITY] [DLA 2014-1] vino security updatehttps://lists.debian.org/debian-lts-announce/2019/11/msg00032.html
- lists.debian.org[debian-lts-announce] 20191221 [SECURITY] [DLA 2045-1] tightvnc security updatehttps://lists.debian.org/debian-lts-announce/2019/12/msg00028.html
- usn.ubuntu.comUSN-4547-1https://usn.ubuntu.com/4547-1/
- usn.ubuntu.comUSN-4573-1https://usn.ubuntu.com/4573-1/
- usn.ubuntu.comUSN-4587-1https://usn.ubuntu.com/4587-1/
07 Fixed in
Arch Linux
- libvncserver Fixed in 0.9.12-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- libvncserver Fixed in 0.9.11+dfsg-1.1
- tightvnc Fixed in 1:1.3.9-9.1
- vino Fixed in 3.22.0-6
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- libvncserver Fixed in 0.9.11+dfsg-1.1
- tightvnc Fixed in 1:1.3.9-9.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- libvncserver Fixed in 0.9.11+dfsg-1.1
- tightvnc Fixed in 1:1.3.9-9.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- libvncserver Fixed in 0.9.9+dfsg-1ubuntu1.3
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- italc Fixed in 1:2.0.2+dfsg1-4ubuntu0.1
- libvncserver Fixed in 0.9.10+dfsg-3ubuntu0.16.04.2
- tightvnc No fix yet
- vino Fixed in 3.8.1-0ubuntu9.3
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- italc Fixed in 1:3.0.3+dfsg1-3ubuntu0.1
- tightvnc No fix yet
- vino Fixed in 3.22.0-3ubuntu1.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- tightvnc No fix yet
- vino Fixed in 3.22.0-5ubuntu2.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- tightvnc No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- tightvnc No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 25.10
- tightvnc No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.04 LTS
- tightvnc No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.10
- tightvnc No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- tightvnc Fixed in 1.3.9-6.5+deb8u1build0.14.04.1~esm1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.