Vulnerability Database

383,304

Total vulnerabilities in the database

CVE-2004-0826 — netscape / personalization_engine

Heap-based buffer overflow in Netscape Network Security Services (NSS) library allows remote attackers to execute arbitrary code via a modified record length field in an SSLv2 client hello message.

  • Published: Dec 31, 2004
  • Updated: Sep 13, 2026
  • CVE: CVE-2004-0826
  • Severity: High
  • Exploit:
  • CISA KEV:

CVSS v2:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/Au:N/C:P/I:P/A:P

No CWE or OWASP classifications available.

Software Affected versions
netscape / personalization_engine All versions
mozilla / network_security_services = 3.2
mozilla / network_security_services = 3.2.1
mozilla / network_security_services = 3.3
mozilla / network_security_services = 3.3.1
mozilla / network_security_services = 3.3.2
mozilla / network_security_services = 3.4
mozilla / network_security_services = 3.4.1
mozilla / network_security_services = 3.4.2
mozilla / network_security_services = 3.5
mozilla / network_security_services = 3.6
mozilla / network_security_services = 3.6.1
mozilla / network_security_services = 3.7
mozilla / network_security_services = 3.7.1
mozilla / network_security_services = 3.7.2
mozilla / network_security_services = 3.7.3
mozilla / network_security_services = 3.7.5
mozilla / network_security_services = 3.7.7
mozilla / network_security_services = 3.8
mozilla / network_security_services = 3.9
netscape / certificate_server = 1.0-patch1
netscape / certificate_server = 4.2
netscape / directory_server = 1.3-patch5
netscape / directory_server = 3.1-patch1
netscape / directory_server = 3.12
netscape / directory_server = 4.1
netscape / directory_server = 4.11
netscape / directory_server = 4.13
netscape / enterprise_server = 2.0
netscape / enterprise_server = 2.0.1c
netscape / enterprise_server = 2.0a
netscape / enterprise_server = 3.0
netscape / enterprise_server = 3.0.1
netscape / enterprise_server = 3.0.1b
netscape / enterprise_server = 3.0.7a
netscape / enterprise_server = 3.0l
netscape / enterprise_server = 3.1
netscape / enterprise_server = 3.2
netscape / enterprise_server = 3.3
netscape / enterprise_server = 3.4
netscape / enterprise_server = 3.5
netscape / enterprise_server = 3.5.1
netscape / enterprise_server = 3.6
netscape / enterprise_server = 3.6-sp1
netscape / enterprise_server = 3.6-sp2
netscape / enterprise_server = 3.6-sp3
netscape / enterprise_server = 4.0
netscape / enterprise_server = 4.1-sp3
netscape / enterprise_server = 4.1-sp4
netscape / enterprise_server = 4.1-sp5
netscape / enterprise_server = 4.1-sp6
netscape / enterprise_server = 4.1-sp7
netscape / enterprise_server = 4.1-sp8
netscape / enterprise_server = 4.1.1
netscape / enterprise_server = 5.0
sun / java_enterprise_system = 2003q4
sun / java_enterprise_system = 2004q2
sun / java_system_application_server = 7.0
sun / java_system_application_server = 7.0-ur4
sun / java_system_application_server = 7.1
sun / one_application_server = 6.0
sun / one_application_server = 6.0-sp1
sun / one_application_server = 6.0-sp2
sun / one_web_server = 4.1
sun / one_web_server = 4.1-sp1
sun / one_web_server = 4.1-sp10
sun / one_web_server = 4.1-sp11
sun / one_web_server = 4.1-sp12
sun / one_web_server = 4.1-sp13
sun / one_web_server = 4.1-sp14
sun / one_web_server = 4.1-sp2
sun / one_web_server = 4.1-sp3
sun / one_web_server = 4.1-sp4
sun / one_web_server = 4.1-sp5
sun / one_web_server = 4.1-sp6
sun / one_web_server = 4.1-sp7
sun / one_web_server = 4.1-sp8
sun / one_web_server = 4.1-sp9
sun / one_web_server = 6.0-sp3
sun / one_web_server = 6.0-sp4
sun / one_web_server = 6.0-sp5
sun / one_web_server = 6.0-sp7
sun / one_web_server = 6.0-sp8
sun / one_web_server = 6.1
sun / one_web_server = 6.1-sp1
sun / one_web_server = 6.1-sp2
hp / hp-ux = 11.00
hp / hp-ux = 11.11
hp / hp-ux = 11.23

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.