CVE-2020-14399
HIGHCVSS 7.5/10EPSS 2.80%
Last modified
CVE-2020-14399 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered in LibVNCServer before 0.9.13. Byte-aligned data is accessed through uint32_t pointers in libvncclient/rfbproto.c. EPSS estimates a 2.80% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Libvncserver Project | Libvncserver | < 0.9.13 |
| Debian | Debian Linux | 8.0 |
| Debian | Debian Linux | 9.0 |
| Opensuse | Leap | 15.1 |
| Opensuse | Leap | 15.2 |
| Canonical | Ubuntu Linux | 16.04 |
| Canonical | Ubuntu Linux | 18.04 |
| Canonical | Ubuntu Linux | 20.04 |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.htmlMailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1860354Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00035.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/08/msg00045.htmlMailing List, Third Party Advisory
- https://usn.ubuntu.com/4434-1/Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.htmlMailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1860354Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00035.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/08/msg00045.htmlMailing List, Third Party Advisory
- https://usn.ubuntu.com/4434-1/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2020-14399?
CVE-2020-14399 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.80% probability of exploitation in the next 30 days.
How do I fix CVE-2020-14399?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2020-14399?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST