AT&T TCP/IP 4.0 on SVR4 /usr/etc/rexecd privileges management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability was found in AT&T TCP and IP 4.0 on SVR4. It has been declared as very critical. This vulnerability affects some unknown processing of the file /usr/etc/rexecd. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The software 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:

vulnerability in rexec daemon (rexecd) in at&t tcp/ip 4.0 for various svr4 systems allows remote attackers to execute arbitrary commands.

The weakness was disclosed 02/25/1992 (Website). The advisory is available at This vulnerability was named CVE-1999-1059. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 04/03/2019). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Not Affected

  • AT&T TCP/IP 3.2
  • AT&T SVR4 4.0




CPE 2.3info

CPE 2.2info


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

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



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Privileges management
CWE: CWE-269 / CWE-266
ATT&CK: T1068

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

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


Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍


02/25/1992 🔍
02/25/1992 +0 days 🔍
02/25/1992 +0 days 🔍
06/16/2014 +8147 days 🔍
04/03/2019 +1752 days 🔍


Status: Not defined

CVE: CVE-1999-1059 (🔍)
SecurityFocus: 36 - AT&T TCP/IP /usr/etc/rexecd Vulnerability


Created: 06/16/2014 03:30 PM
Updated: 04/03/2019 12:01 PM
Changes: 06/16/2014 03:30 PM (38), 04/03/2019 12:01 PM (13)
Complete: 🔍


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