CVE-2004-0176: Multiple buffer overflows in Ethereal 0.8.13 to 0.10.2 allow remote attackers to cause a denial of service and

Q: How do I fix CVE-2004-0176?

ethereal: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2004-0176 being exploited?

CVE-2004-0176 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-2004-0176 affect?

CVE-2004-0176 affects ethereal. Severity is medium (CVSS 5.0). Multiple buffer overflows in Ethereal 0.8.13 to 0.10.2 allow remote attackers to cause a denial of service and possibly execute arbitrary code via the (1) NetFlow, (2) IGAP, (3) EIGRP, (4) PGM, (5) IrDA, (6) BGP, (7) ISUP, or (8) TCAP disse

Q: How urgent is CVE-2004-0176?

Priority 47/100. EPSS top 1%: very likely to be exploited; Public exploit reference

This week

MEDIUM 5.0DOWNGRADE

CVE-2004-0176 is a medium-severity flaw (CVSS 5.0) affecting ethereal. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple buffer overflows in Ethereal 0.8.13 to 0.10.2 allow remote attackers to cause a denial of service and possibly execute arbitrary code via the (1) NetFlow, (2) IGAP, (3) EIGRP, (4) PGM, (5) IrDA, (6) BGP, (7) ISUP, or (8) TCAP dissectors.

Why this priority

EPSS top 1%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	67.1% (top 1%)
CISA exploited list	No
Published	2004-05-04
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

2004-05-04 04:00 UTCPublished CVE record published
2026-06-16 22:05 UTCUpdated Record last modified

ethereal group ethereal DOWNGRADE

Affected: 0.8.13 · 0.8.14 · 0.8.18 · 0.8.19 · 0.9 · 0.9.1 · 0.9.2 · 0.9.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.8.13

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.8.13 (Debian / Ubuntu)

apt-cache madison ethereal sudo apt install ethereal=<VERSION_BEFORE_0.8.13> sudo apt-mark hold ethereal

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list ethereal sudo dnf downgrade ethereal-<VERSION_BEFORE_0.8.13> sudo dnf versionlock add ethereal

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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 0.10.0 < 0.10.2 - IGAP Overflow
Exploit-DB: Ethereal - EIGRP Dissector TLV_IP_INT Long IP Remote Denial of Service

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-2004-0176?

ethereal: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2004-0176 being exploited?

CVE-2004-0176 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-2004-0176 affect?

CVE-2004-0176 affects ethereal. Severity is medium (CVSS 5.0). Multiple buffer overflows in Ethereal 0.8.13 to 0.10.2 allow remote attackers to cause a denial of service and possibly execute arbitrary code via the (1) NetFlow, (2) IGAP, (3) EIGRP, (4) PGM, (5) IrDA, (6) BGP, (7) ISUP, or (8) TCAP disse

How urgent is CVE-2004-0176?

Priority 47/100. EPSS top 1%: very likely to be exploited; Public exploit reference

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References

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