What’s Vulnerable › Vulnerabilities

CVE-2020-25708

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-11-27 · updated 2026-06-17
• Weakness: CWE-369

Description

A divide by zero issue was found to occur in libvncserver-0.9.12. A malicious client could use this flaw to send a specially crafted message that, when processed by the VNC server, would lead to a floating point exception, resulting in a denial of service.

Affected products

• Debian Linux: 10.0
• LibVNCServer: 0.9.12
• Red Hat Enterprise Linux: 6.0, 7.0, 8.0

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1896739
• https://lists.debian.org/debian-lts-announce/2022/09/msg00035.html
• https://bugzilla.redhat.com/show_bug.cgi?id=1896739
• https://lists.debian.org/debian-lts-announce/2022/09/msg00035.html

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