VDB-15220 · CVE-1999-0894 · GCVE-0-1999-0894

Red Hat Linux screen privileges management

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.4	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Red Hat Linux. The impacted element is an unknown function of the component screen. Executing a manipulation can lead to privileges management. This vulnerability is registered as CVE-1999-0894. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as very critical was found in Red Hat Linux (Operating System) (affected version not known). This vulnerability affects some unknown functionality of the component screen. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Red Hat Linux screen program does not use Unix98 ptys, allowing local users to write to other terminals.

The weakness was published 01/04/2000. This vulnerability was named CVE-1999-0894. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/20/2026). The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading eliminates this vulnerability.

Similar entry is available at VDB-15224. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Operating System

Vendor

Red Hat

Name

Linux

License

open-source

Website

Vendor: https://www.redhat.com/

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.4

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/04/2000 🔍
01/04/2000 +0 days 🔍
06/23/2014 +5284 days 🔍
04/20/2026 +4319 days 🔍

Sourcesinfo

Vendor: redhat.com

Status: Confirmed

CVE: CVE-1999-0894 (🔍)
GCVE (CVE): GCVE-0-1999-0894
GCVE (VulDB): GCVE-100-15220
See also: 🔍

Entryinfo

Created: 06/23/2014 15:17
Updated: 04/20/2026 10:10
Changes: 06/23/2014 15:17 (36), 04/14/2019 21:05 (10), 04/20/2026 10:10 (18)
Complete: 🔍
Cache ID: 216::103