Home/CVE/Telnet allows a remote client to specify environment variables including LD_LIBRARY_PATH, allowing an attacker to bypass
CVE

CVE-1999-0073

Telnet allows a remote client to specify environment variables including LD_LIBRARY_PATH, allowing an attacker to bypass

Telnet allows a remote client to specify environment variables including LD_LIBRARY_PATH, allowing an attacker to bypass the normal system libraries and gain root access.

HIGH · CVSS 10 EPSS 0.00268
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules1 YARA rules0
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Affected Products & Versions

3
sgi irixall versions
digital osf 1all versions
digital unixall versions
◈

Detection Rules (IDS/IPS)

1
snort-communityPROTOCOL-TELNET ld_library_pathattempted-admin
Open rulesets (ET Open, Snort Community, abuse.ch) link to source. Commercial rulesets are reference-only.
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumUnix Shell Configuration Modification
▣

Scoring & Timeline

10
HIGH · CVSS v2 (legacy) · cve@mitre.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:L/Au:N/C:C/I:C/A:C
Published to NVD13 Oct 1995 · 04:00 AM
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0073
http://www.openwall.com/lists/oss-security/2026/02/24/3
http://www.openwall.com/lists/oss-security/2026/03/07/3
http://www.openwall.com/lists/oss-security/2026/03/08/6
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