CVE-2019-20788

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

2.49% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 84.1% 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:3.1/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

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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.

Published

2020-04-23 18:06Z6 YR AGO

Last updated

2024-08-05 02:53Z2 YR AGO

Reserved

2020-04-23

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-190Integer Overflow or WraparoundBase
• CWE-787Out-of-bounds WriteBase

Data version

5.1

Document digest

c833d4f1a6c3b1fcce451e23e37e1d54b80bba8d1c186efad63b63350da39d22

• github.comhttps://github.com/LibVNC/libvncserver/commit/54220248886b5001fbbb9fa73c4e1a2cb9413fedx_refsource_MISC
• lists.opensuse.orgopenSUSE-SU-2020:0624http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00027.htmlvendor-advisoryx_refsource_SUSE
• usn.ubuntu.comUSN-4407-1https://usn.ubuntu.com/4407-1/vendor-advisoryx_refsource_UBUNTU
• securitylab.github.comhttps://securitylab.github.com/advisories/GHSL-2020-064-libvnc-libvncclientx_refsource_MISC
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdfx_refsource_CONFIRM