CVE-2023-27830
Last modified
CVE-2023-27830 is a critical-severity vulnerability rated 9/10 on the CVSS scale. 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.. EPSS estimates a 1.08% chance of exploitation in the next 30 days.
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/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Tightvnc | Tightvnc | < 2.8.75 |
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
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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Scan your code nowSource: NVD / NIST