How severe is CVE-2004-2182?

CVE-2004-2182 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2004-2182 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-2182?

CVE-2004-2182 primarily affects Macromedia Jrun. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2004-2182?

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-2004-2182 published?

CVE-2004-2182 was published on 2004-12-31 and last updated on 2026-06-16.

CVE-2004-2182

CVE-2004-2182 is a high-severity vulnerability in Macromedia Jrun with a CVSS 2.0 base score of 7.5. 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-287.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Macromedia Jrun
Published: 2004-12-31
Last modified: 2026-06-16

Description

Session fixation vulnerability in Macromedia JRun 4.0 allows remote attackers to hijack user sessions by pre-setting the user session ID information used by the session server.

Frequently asked questions

What is CVE-2004-2182?: Session fixation vulnerability in Macromedia JRun 4.0 allows remote attackers to hijack user sessions by pre-setting the user session ID information used by the session server.
How severe is CVE-2004-2182?: CVE-2004-2182 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2004-2182 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-2182?: CVE-2004-2182 primarily affects Macromedia Jrun. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-2182?: 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-2004-2182 published?: CVE-2004-2182 was published on 2004-12-31 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:macromedia:jrun:4.0:*:*:*:*:*:*:*
cpe:2.3:a:macromedia:jrun:4.0:sp1:*:*:*:*:*:*
cpe:2.3:a:macromedia:jrun:4.0:sp1a:*:*:*:*:*:*
cpe:2.3:a:macromedia:jrun:4.0_build_61650:*:*:*:*:*:*:*

More vulnerabilities in Macromedia Jrun

CVE-2004-0646 — Critical (CVSS 10.0): Buffer overflow in the WriteToLog function for JRun 3.0 through 4.0 web server connectors, such as (1) mod_jrun and (2)…
CVE-2002-0801 — Critical (CVSS 10.0): Buffer overflow in the ISAPI DLL filter for Macromedia JRun 3.1 allows remote attackers to execute arbitrary code via a…
CVE-2002-0665 — Critical (CVSS 10.0): Macromedia JRun Administration Server allows remote attackers to bypass authentication on the login form via an extra…
CVE-2000-1053 — Critical (CVSS 10.0): Allaire JRun 2.3.3 server allows remote attackers to compile and execute JSP code by inserting it via a cross-site…
CVE-2005-4472 — High (CVSS 7.5): Stack-based buffer overflow in the Macromedia JRun 4 web server (JWS) allows remote attackers to cause a denial of…
CVE-2004-1478 — High (CVSS 7.5): JRun 4.0 does not properly generate and handle the JSESSIONID, which allows remote attackers to perform a session…

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Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →