CVE-2020-14399
An issue was discovered in LibVNCServer before 0.9.13. Byte-aligned data is accessed through uint32_t pointers in libvncclient/rfbproto.c. NOTE: there is reportedly "no trust boundary crossed.
02 Description
An issue was discovered in LibVNCServer before 0.9.13. Byte-aligned data is accessed through uint32_t pointers in libvncclient/rfbproto.c. NOTE: there is reportedly "no trust boundary crossed.
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
- 2.80% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 86.2% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Low. 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
- 2020-06-17 15:12Z6 YR AGO
- Last updated
- 2024-08-04 12:46Z2 YR AGO
- Reserved
- 2020-06-17
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass
- Data version
- 5.1
- Document digest
- f3382e3d9b243ef4a9e5bac1010c5d6e077abfc905024b3b92ac04d4213c9a5f
05 Affected products
06 References
- github.comhttps://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13
- github.comhttps://github.com/LibVNC/libvncserver/commit/23e5cbe6b090d7f22982aee909a6a618174d3c2d
- lists.debian.org[debian-lts-announce] 20200630 [SECURITY] [DLA 2264-1] libvncserver security updatehttps://lists.debian.org/debian-lts-announce/2020/06/msg00035.html
- lists.opensuse.orgopenSUSE-SU-2020:0988http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.html
- lists.opensuse.orgopenSUSE-SU-2020:1025http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.html
- lists.opensuse.orgopenSUSE-SU-2020:1056http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.html
- usn.ubuntu.comUSN-4434-1https://usn.ubuntu.com/4434-1/
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1860354
- lists.debian.org[debian-lts-announce] 20200828 [SECURITY] [DLA 2347-1] libvncserver security updatehttps://lists.debian.org/debian-lts-announce/2020/08/msg00045.html
07 Fixed in
Debian 12
- libvncserver Fixed in 0.9.13+dfsg-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- libvncserver Fixed in 0.9.13+dfsg-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- libvncserver Fixed in 0.9.13+dfsg-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- libvncserver Fixed in 0.9.10+dfsg-3ubuntu0.16.04.5
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- libvncserver Fixed in 0.9.11+dfsg-1ubuntu1.3
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- libvncserver Fixed in 0.9.12+dfsg-9ubuntu0.2
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.