CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2019-20788
Critical (9.8). EPSS 2.5% chance of exploitation in the next 30 days.
libvncclient/cursor.c in LibVNCServer through 0.9.12 has a HandleCursorShape integer overflow and heap-based buffer overflow via a large height or width value. NOTE: this may overlap CVE-2019-15690.
Severity
- EPSS
- 2.5% chance of exploitation in the next 30 days; higher than 84% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-190, CWE-787
- Published
- Modified
- Record from
- the NVD, synced
Affected
- canonical:ubuntu_linux
- debian:debian_linux
- libvnc_project:libvncserver
- siemens:simatic_itc1500_firmware
- siemens:simatic_itc1500_pro_firmware
- siemens:simatic_itc1900_firmware
- siemens:simatic_itc1900_pro_firmware
- siemens:simatic_itc2200_firmware
- siemens:simatic_itc2200_pro_firmware
References
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00027.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
- https://github.com/LibVNC/libvncserver/commit/54220248886b5001fbbb9fa73c4e1a2cb9413fed
- https://securitylab.github.com/advisories/GHSL-2020-064-libvnc-libvncclient
- https://usn.ubuntu.com/4407-1/