CVE-2007-6121

CVE-2007-6121 is a medium-severity vulnerability in Ethereal Group Ethereal with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

• Severity: Medium (CVSS 2.0 base score 5.0)
• EPSS exploit prediction: 2% (79th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-20
• Affected product: Ethereal Group Ethereal
• Published: 2007-11-23
• Last modified: 2026-06-16

Description

Wireshark (formerly Ethereal) 0.8.16 to 0.99.6 allows remote attackers to cause a denial of service (crash) via a malformed RPC Portmap packet.

Frequently asked questions

What is CVE-2007-6121?

Wireshark (formerly Ethereal) 0.8.16 to 0.99.6 allows remote attackers to cause a denial of service (crash) via a malformed RPC Portmap packet.

How severe is CVE-2007-6121?

CVE-2007-6121 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2007-6121 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-6121?

CVE-2007-6121 primarily affects Ethereal Group Ethereal. In total, 53 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-6121?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2007-6121 published?

CVE-2007-6121 was published on 2007-11-23 and last updated on 2026-06-16.

References

• http://bugs.gentoo.org/show_bug.cgi?id=199958
• http://lists.opensuse.org/opensuse-security-announce/2008-02/msg00008.html
• http://secunia.com/advisories/27777
• http://secunia.com/advisories/27817
• http://secunia.com/advisories/28197
• http://secunia.com/advisories/28207
• http://secunia.com/advisories/28288
• http://secunia.com/advisories/28304
• http://secunia.com/advisories/28325
• http://secunia.com/advisories/28564
• http://secunia.com/advisories/28583
• http://secunia.com/advisories/29048
• http://security.gentoo.org/glsa/glsa-200712-23.xml
• http://securitytracker.com/id?1018988
• http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0004
• http://www.debian.org/security/2007/dsa-1414
• http://www.mandriva.com/security/advisories?name=MDVSA-2008:001
• http://www.mandriva.com/security/advisories?name=MDVSA-2008:1
• http://www.redhat.com/support/errata/RHSA-2008-0058.html
• http://www.redhat.com/support/errata/RHSA-2008-0059.html
• http://www.securityfocus.com/archive/1/485792/100/0/threaded
• http://www.securityfocus.com/bid/26532
• http://www.vupen.com/english/advisories/2007/3956
• http://www.wireshark.org/security/wnpa-sec-2007-03.html
• https://issues.rpath.com/browse/RPL-1975
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11374
• https://www.redhat.com/archives/fedora-package-announce/2007-December/msg00606.html
• https://www.redhat.com/archives/fedora-package-announce/2007-December/msg00712.html

Affected products (53)

• cpe:2.3:a:ethereal_group:ethereal:0.8.16:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.8.17:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.8.17a:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.8.18:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.8.19:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.8.20:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.9:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.9.0:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.9.1:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.9.2:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.9.3:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.9.4:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.9.5:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.9.6:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.9.7:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.9.8:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.9.9:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.9.10:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.9.11:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.9.12:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.9.13:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.9.14:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.9.15:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.9.16:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.10:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.10.0:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.10.0a:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.10.1:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.10.2:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.10.3:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.10.4:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.10.5:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.10.6:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.10.7:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.10.8:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.10.9:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.10.10:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.10.11:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.10.12:*:*:*:*:*:*:*
• cpe:2.3:a:ethereal_group:ethereal:0.10.13:*:*:*:*:*:*:*

More vulnerabilities in Ethereal Group Ethereal

• CVE-2006-3632 — Critical (CVSS 10.0): Buffer overflow in Wireshark (aka Ethereal) 0.8.16 to 0.99.0 allows remote attackers to cause a denial of service and…
• CVE-2006-3628 — Critical (CVSS 10.0): Multiple format string vulnerabilities in Wireshark (aka Ethereal) 0.10.x to 0.99.0 allow remote attackers to cause a…
• CVE-2006-1932 — Critical (CVSS 10.0): Off-by-one error in the OID printing routine in Ethereal 0.10.x up to 0.10.14 has unknown impact and remote attack…
• CVE-2005-3184 — Critical (CVSS 10.0): Buffer overflow vulnerability in the unicode_to_bytes in the Service Location Protocol (srvloc) dissector…
• CVE-2004-0507 — Critical (CVSS 10.0): Buffer overflow in the MMSE dissector for Ethereal 0.10.1 to 0.10.3 allows remote attackers to cause a denial of…
• CVE-2003-0431 — Critical (CVSS 10.0): The tvb_get_nstringz0 function in Ethereal 0.9.12 and earlier does not properly handle a zero-length buffer size, with…

All CVEs affecting Ethereal Group Ethereal →

Other CWE-20 (Improper Input Validation) vulnerabilities

• CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
• CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
• CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
• CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
• CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
• CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →