CVE-2001-0554 Memory corruption in n/a

What is CVE-2001-0554?

CVE-2001-0554 is a critical memory corruption vulnerability in Debian Debian Linux, published on 9 Mar 2002. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Buffer overflow in BSD-based telnetd telnet daemon on various operating systems allows remote attackers to execute arbitrary commands via a set of options including AYT (Are You There), which is not properly handled by the telrcv function.

Weakness: CWE-120

Which versions are affected by CVE-2001-0554?

It affects 11 products.

Products include Debian Debian Linux, Freebsd Freebsd, Ibm Aix, Mit Kerberos, Mit Kerberos 5, Netbsd Netbsd and 5 more.

How do I fix CVE-2001-0554?

No fix has been published for CVE-2001-0554 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2001-0554 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2001-0554 exists.

Public exploit code: 1 Exploit-DB entry.

Other vulnerabilities in Debian Debian Linux

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• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-cxg3-hwc8-9mx4.