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CRITICAL · 9.0

CVE-2023-27830

TightVNC before v2.8.75 allows attackers to escalate privileges on the host operating system via replacing legitimate files with crafted files when executing a file transfer. This is due to the fact t...

Vulnerability Description

TightVNC before v2.8.75 allows attackers to escalate privileges on the host operating system via replacing legitimate files with crafted files when executing a file transfer. This is due to the fact that TightVNC runs in the backend as a high-privileges account.

CVSS Score

9.0

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
TightvncTightvnc< 2.8.75

Related Weaknesses (CWE)

CWE-269

References

FAQ

What is CVE-2023-27830?

CVE-2023-27830 is a vulnerability with a CVSS score of 9.0 (CRITICAL). TightVNC before v2.8.75 allows attackers to escalate privileges on the host operating system via replacing legitimate files with crafted files when executing a file transfer. This is due to the fact t...

How severe is CVE-2023-27830?

CVE-2023-27830 has been rated CRITICAL with a CVSS base score of 9.0/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2023-27830?

Check the references section above for vendor advisories and patch information. Affected products include: Tightvnc Tightvnc.