CVE-2023-27830

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Published Apr 12, 2023 CVSS 3.1 · 9 Critical EPSS 1.1% KEV · Not listed

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:tightvnc:tightvnc:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2023-31566	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

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: 1.1% (1.078% probability within 30 days)

Exploitation none

Automatable no

Technical Impact total

References

Link	Providers
https://medium.com/nestedif/vulnerability-disclosure-privilege-escalation-tightvnc-8165208cce
https://www.tightvnc.com/news.php
https://www.tightvnc.com/whatsnew.php

History

Feb 8, 2025 3:15 AM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Subscriptions

Tightvnc Tightvnc

Weaknesses

CWE-269

Sources

CVE record Updated: Feb 8, 2025, 2:40 AM

Status: PUBLISHED
Assigner: mitre
Published: Apr 12, 2023, 12:00 AM
Updated: Feb 8, 2025, 2:40 AM
Reserved: Mar 5, 2023, 12:00 AM

View source JSON

Vulnrichment Updated: Aug 2, 2024, 12:23 PM

Updated: Aug 2, 2024, 12:23 PM

NVD Updated: Jun 17, 2026, 5:45 AM

Status: Modified
Published: Apr 12, 2023, 3:15 PM
Modified: Jun 17, 2026, 5:45 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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