CVE-1999-0046
CriticalPublic exploitBuffer overflow of rlogin program using TERM environmental variable.
Published Feb 6, 1997 · Updated Apr 15, 2026
Key Facts
Patch immediately- CVE-1999-0046 is a critical-severity vulnerability (CVSS 10.0 v2) affecting Bsd OS (Bsdi), Debian Linux, Ultrix (Digital) and 7 more products.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 52% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v2
10.0
AV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
52%
Higher than 98.9% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-1999-0046 brief as a PDF
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Description
Buffer overflow of rlogin program using TERM environmental variable.
Affected Products
42 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Bsd OSBsdi | 1.1, 2.0, 2.0.1, 2.1 | n/a |
| Debian LinuxDebian | 0.93 | n/a |
| UltrixDigital | See advisory | n/a |
| FreebsdFreebsd | 1.1.5.1, 2.0, 2.0.5, 2.1.0, 2.1.5 | n/a |
| Hp-UxHp | 10.00, 10.01, 10.08, 10.09, 10.10, 10.16, 10.20, 10.24 | n/a |
Timeline
Publicly disclosed
Feb 6, 1997
Last updated
Apr 15, 2026
Weakness Type
- CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
References
FAQ
Common Questions.
Buffer overflow of rlogin program using TERM environmental variable.
Affected: Bsd OS (Bsdi) versions 1.1, 2.0, 2.0.1, 2.1; Debian Linux versions 0.93; Ultrix (Digital), among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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