Vulnerability Report

CVE-2023-27830

Title: Tightvnc Auth Bypass

Auth Bypass

Proof Of Concept

No public PoC currently indexed for CVE-2023-27830.

CWE Category CWE-269
Published Date Apr 12, 2023
Modified Date Feb 08, 2025
Exploit Status Not Found
Score 9.0 CVSS v3.1
Exploit Probability (EPSS)
1.08%

Vulnerability Summary

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 that TightVNC runs in the backend as a high-privileges account.

Impacted Vendors

T
tightvnc 1

Reference Links

https://medium.com/nestedif/vulnerability-disclosure-privilege-escalation-tightvnc-8165208cce https://www.tightvnc.com/news.php https://www.tightvnc.com/whatsnew.php https://medium.com/nestedif/vulnerability-disclosure-privilege-escalation-tightvnc-8165208cce https://www.tightvnc.com/news.php https://www.tightvnc.com/whatsnew.php
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
9.0
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
CVSS v3.1
Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0
Severity CRITICAL
9.0
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2023-27830 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction REQUIRED
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Affected Stack

No specific products linked.