Is CVE-2017-6331 in the CISA KEV catalog?

No. CVE-2017-6331 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-6331?

CVE-2017-6331 has a CVSS v3 base score of 7.1 (HIGH).

What is the EPSS score for CVE-2017-6331?

CVE-2017-6331 has an EPSS score of 1.69% (74th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-6331?

Upgrade endpoint protection to 14.0 or later.

CVE & CISA-KEV Catalog

CVE-2017-6331

HIGHEPSS 74th pctl

7.1

CVSS v3

NVD

Description

Prior to SEP 14 RU1 Symantec Endpoint Protection product can encounter an issue of Tamper-Protection Bypass, which is a type of attack that bypasses the real time protection for the application that is run on servers and clients.

How to fix

Remediation Available

endpoint protectionNVD

Affected:< 14.0Fixed in:14.0CVE-2017-6331derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Exploit Intelligence

1.69%probability of exploitation in 30 days

74thpercentile

Elevated risk: more likely to be exploited than 74% of all known CVEs.

References

Exploit1

exploit-db.com

Vendor Advisory1

symantec.com

Third-Party Advisory2

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.