How severe is CVE-2016-3651?

CVE-2016-3651 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-3651 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-3651?

CVE-2016-3651 affects Symantec Endpoint Protection Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-3651?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2016-3651 published?

CVE-2016-3651 was published on 2016-06-30 and last updated on 2026-06-17.

CVE-2016-3651

CVE-2016-3651 is a high-severity vulnerability in Symantec Endpoint Protection Manager with a CVSS 3.x base score of 8.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: High (CVSS 3.x base score 8.0)
CVSS v2: 6.0
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Symantec Endpoint Protection Manager
Published: 2016-06-30
Last modified: 2026-06-17

Description

Symantec Endpoint Protection Manager (SEPM) 12.1 before RU6 MP5 allows remote authenticated users to discover the PHP JSESSIONID value via unspecified vectors.

Frequently asked questions

What is CVE-2016-3651?: Symantec Endpoint Protection Manager (SEPM) 12.1 before RU6 MP5 allows remote authenticated users to discover the PHP JSESSIONID value via unspecified vectors.
How severe is CVE-2016-3651?: CVE-2016-3651 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-3651 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-3651?: CVE-2016-3651 affects Symantec Endpoint Protection Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-3651?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2016-3651 published?: CVE-2016-3651 was published on 2016-06-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:symantec:endpoint_protection_manager:*:mp4:*:*:*:*:*:*

More vulnerabilities in Symantec Endpoint Protection Manager

CVE-2016-3650 — High (CVSS 8.8): Symantec Endpoint Protection Manager (SEPM) 12.1 before RU6 MP5 allows remote authenticated users to discover…
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