CVE-2023-27830

CriticalCVSS 9.0/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 9.0/10CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-269

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://medium.com/nestedif/vulnerability-disclosure-privilege-escalation-tightvnc-8165208cceExploit, Third Party Advisory
https://www.tightvnc.com/news.phpProduct, Release Notes
https://www.tightvnc.com/whatsnew.phpProduct, Release Notes
https://medium.com/nestedif/vulnerability-disclosure-privilege-escalation-tightvnc-8165208cceExploit, Third Party Advisory
https://www.tightvnc.com/news.phpProduct, Release Notes
https://www.tightvnc.com/whatsnew.phpProduct, Release Notes

Timeline

Published: Apr 12, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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