Is CVE-2016-10259 actively exploited?

No active exploitation of CVE-2016-10259 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2016-10259 be exploited remotely?

Yes. CVE-2016-10259 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2016-10259?

CVE-2016-10259 has a CVSS score of 5.9 (MEDIUM).

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MEDIUM

CVE-2016-10259

CWE-399Published: April 11, 2017· Updated: Jun 17, 2026

5.9

CVSS v3.1

Official Description

Symantec SSL Visibility (SSLV) 3.8.4FC, 3.9, 3.10 before 3.10.4.1, and 3.11 before 3.11.3.1 is susceptible to a denial-of-service vulnerability that impacts the SSL servers for intercepted SSL connections. A malicious SSL client can, under certain circumstances, temporarily exhaust the TCP connection pool of an SSL server.

NVD Source

Technical Analysis

CVE-2016-10259 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.9.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

bluecoat8 product(s)

ssl visibility appliance sv1800 firmwaressl visibility appliance sv1800ssl visibility appliance sv800 firmwaressl visibility appliance sv800ssl visibility appliance sv3800 firmwaressl visibility appliance sv3800ssl visibility appliance sv2800 firmwaressl visibility appliance sv2800

Source: NVD CPE · 32 total CPE entries