CVE-2023-27830
CRITICALTightVNC < 2.8.75 - Privilege Escalation via File Transfer
Title source: llmDescription
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.
References (3)
Core 3
Core References
Exploit, Third Party Advisory
https://medium.com/nestedif/vulnerability-disclosure-privilege-escalation-tightvnc-8165208cce
Product, Release Notes
https://www.tightvnc.com/news.php
Product, Release Notes
https://www.tightvnc.com/whatsnew.php
Scores
CVSS v3
9.0
EPSS
0.0108
EPSS Percentile
60.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-269
Status
published
Products (1)
tightvnc/tightvnc
< 2.8.75
Published
Apr 12, 2023
Tracked Since
Feb 18, 2026