Is CVE-2001-0554 in the CISA KEV catalog?

No. CVE-2001-0554 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2001-0554?

CVE-2001-0554 has a CVSS v2 base score of 10.0 (HIGH).

What is the EPSS score for CVE-2001-0554?

CVE-2001-0554 has an EPSS score of 37.90% (98th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2001-0554

HIGHEPSS 98th pctl

10.0

CVSS v2

NVD

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.

CWE-120

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

37.90%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

http://archives.neohapsis.com/archives/hp/2001-q4/0014.html
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000413
http://ftp.support.compaq.com/patches/.new/html/SSRT0745U.shtml
http://online.securityfocus.com/advisories/3476
http://online.securityfocus.com/archive/1/199496
http://online.securityfocus.com/archive/1/199541
http://online.securityfocus.com/archive/1/203000
http://www.calderasystems.com/support/security/advisories/CSSA-2001-030.0.txt
http://www.cert.org/advisories/CA-2001-21.html
http://www.ciac.org/ciac/bulletins/l-131.shtml
http://www.cisco.com/warp/public/707/catos-telrcv-vuln-pub.shtml
http://www.debian.org/security/2001/dsa-070
http://www.debian.org/security/2001/dsa-075
http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-068.php3
http://www.novell.com/linux/security/advisories/2001_029_nkitb_txt.html
http://www.osvdb.org/809
http://www.redhat.com/support/errata/RHSA-2001-099.html
http://www.redhat.com/support/errata/RHSA-2001-100.html
http://www.securityfocus.com/archive/1/197804
http://www.securityfocus.com/bid/3064
https://exchange.xforce.ibmcloud.com/vulnerabilities/6875

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.