CVE-2000-1174: Multiple buffer overflows in AFS ACL parser for Ethereal 0.8.13 and earlier allows remote attackers to execute

Q: How do I fix CVE-2000-1174?

ethereal: upgrade to newer than 0.8.13. Exact commands for each OS are on this page.

Q: Is CVE-2000-1174 being exploited?

CVE-2000-1174 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2000-1174 affect?

CVE-2000-1174 affects ethereal. Severity is high (CVSS 7.5). Multiple buffer overflows in AFS ACL parser for Ethereal 0.8.13 and earlier allows remote attackers to execute arbitrary commands via a packet with a long username.

Q: How urgent is CVE-2000-1174?

Priority 55/100. High severity; EPSS top 7%: very likely to be exploited; Public exploit reference

This month

HIGH 7.5UPGRADE

CVE-2000-1174 is a high-severity flaw (CVSS 7.5) affecting ethereal. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple buffer overflows in AFS ACL parser for Ethereal 0.8.13 and earlier allows remote attackers to execute arbitrary commands via a packet with a long username.

Why this priority

High severity
EPSS top 7%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	5.8% (top 7%)
CISA exploited list	No
Published	2001-01-09
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: ethereal group

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2001-01-09 05:00 UTCPublished CVE record published
2026-06-16 21:53 UTCUpdated Record last modified

ethereal group ethereal UPGRADE

Affected: <= 0.8.13

Fixed in: newer than 0.8.13

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ethereal || rpm -q ethereal || ethereal --version

2. UPGRADE to newer than 0.8.13 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ethereal

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ethereal

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Ethereal - AFS Buffer Overflow

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2000-1174?

ethereal: upgrade to newer than 0.8.13. Exact commands for each OS are on this page.

Is CVE-2000-1174 being exploited?

CVE-2000-1174 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2000-1174 affect?

CVE-2000-1174 affects ethereal. Severity is high (CVSS 7.5). Multiple buffer overflows in AFS ACL parser for Ethereal 0.8.13 and earlier allows remote attackers to execute arbitrary commands via a packet with a long username.

How urgent is CVE-2000-1174?

Priority 55/100. High severity; EPSS top 7%: very likely to be exploited; Public exploit reference

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References

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