CVE-2019-15681
7.5 · HIGHOverview
CVE-2019-15681 is a high-severity vulnerability affecting libvnc_project libvncserver. It was published on October 29, 2019 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
LibVNC commit before d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a contains a memory leak (CWE-655) in VNC server code, which allow an attacker to read stack memory and can be abused for information disclosure. Combined with another vulnerability, it can be used to leak stack memory and bypass ASLR. This attack appear to be exploitable via network connectivity. These vulnerabilities have been fixed in commit d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a.
Remediation
Check the references section for vendor advisories and patches from libvnc_project. Update libvncserver to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| libvnc_project | libvncserver | >= 0, < 0.9.12 | Affected |
| siemens | simatic_itc1500_firmware | >= 3.0.0.0, < 3.2.1.0 | Affected |
| siemens | simatic_itc1500_pro_firmware | >= 3.0.0.0, < 3.2.1.0 | Affected |
| siemens | simatic_itc1900_firmware | >= 3.0.0.0, < 3.2.1.0 | Affected |
| siemens | simatic_itc1900_pro_firmware | >= 3.0.0.0, < 3.2.1.0 | Affected |
| siemens | simatic_itc2200_firmware | >= 3.0.0.0, < 3.2.1.0 | Affected |
| siemens | simatic_itc2200_pro_firmware | >= 3.0.0.0, < 3.2.1.0 | Affected |
References
Frequently Asked Questions
What is CVE-2019-15681?
CVE-2019-15681 is a high-severity vulnerability affecting libvnc_project libvncserver. It was published on October 29, 2019 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2019-15681?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2019-15681?
Check the references section for vendor advisories and patches from libvnc_project. Update libvncserver to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2019-15681?
CyberStrike's AI-powered security agents can automatically detect CVE-2019-15681 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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