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9.0
CRITICAL CVSS 3.1
CVE-2023-27830
TightVNC Escalation of Privileges
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.

INFO

Published Date :

April 12, 2023, 3:15 p.m.

Last Modified :

Feb. 8, 2025, 3:15 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2023-27830 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Tightvnc tightvnc
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 CRITICAL [email protected]
CVSS 3.1 CRITICAL 134c704f-9b21-4f2e-91b3-4a467353bcc0
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-27830.

URL Resource
https://medium.com/nestedif/vulnerability-disclosure-privilege-escalation-tightvnc-8165208cce Exploit Third Party Advisory
https://www.tightvnc.com/news.php Product Release Notes
https://www.tightvnc.com/whatsnew.php Product Release Notes
https://medium.com/nestedif/vulnerability-disclosure-privilege-escalation-tightvnc-8165208cce Exploit Third Party Advisory
https://www.tightvnc.com/news.php Product Release Notes
https://www.tightvnc.com/whatsnew.php Product Release Notes
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-27830 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-27830 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-27830 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2023-27830 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Feb. 08, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
    Added CWE CWE-269
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://medium.com/nestedif/vulnerability-disclosure-privilege-escalation-tightvnc-8165208cce
    Added Reference https://www.tightvnc.com/news.php
    Added Reference https://www.tightvnc.com/whatsnew.php
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Apr. 24, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
    Changed Reference Type https://medium.com/nestedif/vulnerability-disclosure-privilege-escalation-tightvnc-8165208cce No Types Assigned https://medium.com/nestedif/vulnerability-disclosure-privilege-escalation-tightvnc-8165208cce Exploit, Third Party Advisory
    Changed Reference Type https://www.tightvnc.com/news.php No Types Assigned https://www.tightvnc.com/news.php Product, Release Notes
    Changed Reference Type https://www.tightvnc.com/whatsnew.php No Types Assigned https://www.tightvnc.com/whatsnew.php Product, Release Notes
    Added CWE NIST CWE-269
    Added CPE Configuration OR *cpe:2.3:a:tightvnc:tightvnc:*:*:*:*:*:*:*:* versions up to (excluding) 2.8.75
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 9
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.09 }} -0.00%

score

0.27067

percentile