CVE-2007-3803: n/a vulnerability

Security readout for executives and security teams

This issue affects Clavister CorePlus SMTP filtering. In affected versions, the SMTP application-layer gateway may misread certain SMTP commands, letting a remote sender bypass configured address blacklists. The main business risk is weakened email policy enforcement, not system takeover based on the supplied sources. Exposure is limited to organizations running affected Clavister CorePlus versions with SMTP ALG address blacklist controls enabled or relied upon for mail filtering. Treat as a targeted policy-bypass issue. Prioritize remediation where Clavister SMTP ALG blacklists are a primary anti-abuse or compliance control. Mitigation focus: Review Clavister release notes for CorePlus 8.80.04 and 8.81.01.; Upgrade affected CorePlus deployments according to vendor guidance.; Audit SMTP ALG blacklist rules for business-critical mail controls..

Prepared: Jun 29, 2026, 04:34 UTC (UTC+00:00)

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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CVE-2007-3803 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jul 16, 2007, 23:00 UTC (UTC+00:00)

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

2Source links

CVSS and timeline data

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

Source materials

CVE List V5 sourceCVE List V5
clavister-smtp-security-bypass(35371)CVE reference · vdb-entry, x_refsource_XF

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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

CVE-2007-3803: The SMTP ALG in Clavister CorePlus before 8.80.04, and 8.81.00, does not properly parse SMTP commands in ce...