How severe is CVE-2006-5403?

CVE-2006-5403 has a CVSS 2.0 base score of 5.1, rated medium severity.

Is CVE-2006-5403 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-5403?

CVE-2006-5403 primarily affects Symantec Automated Support Assistant. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-5403?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2006-5403 published?

CVE-2006-5403 was published on 2006-10-19 and last updated on 2026-06-16.

CVE-2006-5403

CVE-2006-5403 is a medium-severity vulnerability in Symantec Automated Support Assistant with a CVSS 2.0 base score of 5.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.1)
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Symantec Automated Support Assistant
Published: 2006-10-19
Last modified: 2026-06-16

Description

Stack-based buffer overflow in an ActiveX control used in Symantec Automated Support Assistant, as used in Norton AntiVirus, Internet Security, and System Works 2005 and 2006, allows user-assisted remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors.

Frequently asked questions

What is CVE-2006-5403?: Stack-based buffer overflow in an ActiveX control used in Symantec Automated Support Assistant, as used in Norton AntiVirus, Internet Security, and System Works 2005 and 2006, allows user-assisted remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors.
How severe is CVE-2006-5403?: CVE-2006-5403 has a CVSS 2.0 base score of 5.1, rated medium severity.
Is CVE-2006-5403 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-5403?: CVE-2006-5403 primarily affects Symantec Automated Support Assistant. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-5403?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-5403 published?: CVE-2006-5403 was published on 2006-10-19 and last updated on 2026-06-16.

References

Affected products (5)

cpe:2.3:a:symantec:automated_support_assistant:*:*:*:*:*:*:*:*
cpe:2.3:a:symantec:norton_antivirus:*:*:*:*:*:*:*:*
cpe:2.3:a:symantec:norton_internet_security:2006:*:*:*:*:*:*:*
cpe:2.3:a:symantec:norton_system_works:2005:*:*:*:*:*:*:*
cpe:2.3:a:symantec:norton_system_works:2006:*:*:*:*:*:*:*

More vulnerabilities in Symantec Automated Support Assistant

CVE-2006-6490 — Critical (CVSS 10.0): Multiple buffer overflows in the SupportSoft (1) SmartIssue (tgctlsi.dll) and (2) ScriptRunner (tgctlsr.dll) ActiveX…
CVE-2006-5404 — Low (CVSS 2.6): Unspecified vulnerability in an ActiveX control used in Symantec Automated Support Assistant, as used in Norton…

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