How severe is CVE-2004-0866?

CVE-2004-0866 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2004-0866 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-0866?

CVE-2004-0866 primarily affects Kde Konqueror. In total, 27 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2004-0866?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2004-0866 published?

CVE-2004-0866 was published on 2004-09-16 and last updated on 2026-06-16.

CVE-2004-0866

CVE-2004-0866 is a high-severity vulnerability in Kde Konqueror with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 10% places it in the 95th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 10% (95th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Kde Konqueror
Published: 2004-09-16
Last modified: 2026-06-16

Description

Internet Explorer 6.0 allows web sites to set cookies for country-specific top-level domains, such as .ltd.uk, .plc.uk, and .sch.uk, which could allow remote attackers to perform a session fixation attack and hijack a user's HTTP session.

Frequently asked questions

What is CVE-2004-0866?: Internet Explorer 6.0 allows web sites to set cookies for country-specific top-level domains, such as .ltd.uk, .plc.uk, and .sch.uk, which could allow remote attackers to perform a session fixation attack and hijack a user's HTTP session.
How severe is CVE-2004-0866?: CVE-2004-0866 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2004-0866 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-0866?: CVE-2004-0866 primarily affects Kde Konqueror. In total, 27 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-0866?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2004-0866 published?: CVE-2004-0866 was published on 2004-09-16 and last updated on 2026-06-16.

References

Affected products (27)

cpe:2.3:a:kde:konqueror:2.1.1:*:*:*:*:*:*:*
cpe:2.3:a:kde:konqueror:2.1.2:*:*:*:*:*:*:*
cpe:2.3:a:kde:konqueror:2.2.1:*:*:*:*:*:*:*
cpe:2.3:a:kde:konqueror:2.2.2:*:*:*:*:*:*:*
cpe:2.3:a:kde:konqueror:3.0:*:*:*:*:*:*:*
cpe:2.3:a:kde:konqueror:3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:kde:konqueror:3.0.2:*:*:*:*:*:*:*
cpe:2.3:a:kde:konqueror:3.0.3:*:*:*:*:*:*:*
cpe:2.3:a:kde:konqueror:3.0.5:*:*:*:*:*:*:*
cpe:2.3:a:kde:konqueror:3.0.5b:*:*:*:*:*:*:*
cpe:2.3:a:kde:konqueror:3.1:*:*:*:*:*:*:*
cpe:2.3:a:kde:konqueror:3.1.1:*:*:*:*:*:*:*
cpe:2.3:a:kde:konqueror:3.1.2:*:*:*:*:*:*:*
cpe:2.3:a:kde:konqueror:3.1.3:*:*:*:*:*:*:*
cpe:2.3:a:kde:konqueror:3.1.4:*:*:*:*:*:*:*
cpe:2.3:a:kde:konqueror:3.1.5:*:*:*:*:*:*:*
cpe:2.3:a:kde:konqueror:3.2.1:*:*:*:*:*:*:*
cpe:2.3:a:kde:konqueror:3.2.3:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:ie:6.0:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:ie:6.0:sp2:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_explorer:6.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:0.9.2:*:*:*:*:*:*:*
cpe:2.3:o:suse:suse_linux:1.0:*:desktop:*:*:*:*:*
cpe:2.3:o:suse:suse_linux:8:*:enterprise_server:*:*:*:*:*
cpe:2.3:o:suse:suse_linux:8.1:*:*:*:*:*:*:*
cpe:2.3:o:suse:suse_linux:8.2:*:*:*:*:*:*:*
cpe:2.3:o:suse:suse_linux:9.0:*:*:*:*:*:*:*

More vulnerabilities in Kde Konqueror

CVE-2007-1565 — High (CVSS 7.8): Konqueror 3.5.5 allows remote attackers to cause a denial of service (crash) by using JavaScript to read a child iframe…
CVE-2004-1165 — High (CVSS 7.5): Konqueror 3.3.1 allows remote attackers to execute arbitrary FTP commands via an ftp:// URL that contains a URL-encoded…
CVE-2004-1158 — High (CVSS 7.5): Konqueror 3.x up to 3.2.2-6, and possibly other versions, allows remote attackers to spoof arbitrary web sites by…
CVE-2004-0867 — High (CVSS 7.5): Mozilla Firefox 0.9.2 allows web sites to set cookies for country-specific top-level domains, such as .ltd.uk, .plc.uk,…
CVE-2004-0746 — High (CVSS 7.5): Konqueror in KDE 3.2.3 and earlier allows web sites to set cookies for country-specific top-level domains, such as…
CVE-2004-0721 — High (CVSS 7.5): Konqueror 3.1.3, 3.2.2, and possibly other versions does not properly prevent a frame in one domain from injecting…

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