CVE-1999-1194

Digital Ultrix <4.1-4.0 - Privilege Escalation

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-1999-1194. PoCs published by anonymous.

AI-analyzed exploit summary This exploit leverages an improperly installed /usr/bin/chroot in Ultrix 4.0 and 4.1 to gain root privileges by creating a fake /etc/passwd file and manipulating the chroot environment to spawn a root shell.

Description

chroot in Digital Ultrix 4.1 and 4.0 is insecurely installed, which allows local users to gain privileges.

Exploits (1)

exploitdb WORKING POC VERIFIED
by anonymous · textlocalaix
https://www.exploit-db.com/exploits/19041

This exploit leverages an improperly installed /usr/bin/chroot in Ultrix 4.0 and 4.1 to gain root privileges by creating a fake /etc/passwd file and manipulating the chroot environment to spawn a root shell.

Classification
Working Poc 100%
Attack Type
Lpe
Complexity
Trivial
Reliability
Reliable
Target: Ultrix 4.0, 4.1
No auth needed
Prerequisites: Access to a local shell on the target system · Presence of improperly installed /usr/bin/chroot
mistral-large-3 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Patch, Third Party Advisory, US Government Resource third-party-advisory x_refsource_cert
http://www.cert.org/advisories/CA-1991-05.html
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/577
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/17

Scores

EPSS 0.0097
EPSS Percentile 58.5%

Details

Status published
Products (2)
digital/ultrix 4.0
digital/ultrix 4.1
Published May 01, 1991
Tracked Since Feb 18, 2026