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CVE Record

CVE-2002-2438: TCP firewalls could be circumvented by sending a SYN Packets with other flags (like e.g.

TCP firewalls could be circumvented by sending a SYN Packets with other flags (like e.g. RST flag) set, which was not correctly discarded by the Linux TCP stack after firewalling.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

This is a legacy Linux kernel TCP handling issue. Certain malformed TCP connection packets could pass firewall checks and still be accepted by the Linux TCP stack instead of being discarded. The bundle identifies exposure as Linux kernel versions before 2.4.20. Business urgency depends on whether any unsupported 2.4-era Linux systems remain in production or embedded appliances. Likely limited to very old Linux 2.4 kernels or systems based on them, including neglected appliances or embedded network devices. Modern, vendor-supported Linux distributions are unlikely to run kernels before 2.4.20, but asset inventory should verify this instead of assuming it. Handle as a legacy exposure cleanup item. It becomes urgent only if unsupported Linux 2.4-era systems still sit on exposed networks or enforce TCP firewall policy. Otherwise, prioritize verification through inventory and decommission planning over emergency response. Mitigation focus: Identify Linux systems running kernels older than 2.4.20.; Upgrade or retire affected legacy kernels where found.; Check vendor advisories for appliance-specific firmware guidance..

Prepared

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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cwe · medium confidence lookup

CWE-287: Credential and account abuse lookup

Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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cve · low confidence lookup

CVE-2002-2438 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
6Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/akernelbefore Linux kernel 2.4.20Listed
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-287 · source CWE mapping

Improper Authentication

Improper Authentication represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.