Is CVE-2017-2856 actively exploited?

No active exploitation of CVE-2017-2856 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2017-2856 be exploited remotely?

Yes. CVE-2017-2856 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2017-2856?

CVE-2017-2856 has a CVSS score of 8.1 (HIGH).

HOME VULNERABILITIESCVE-2017-2856

HIGH

CVE-2017-2856

CWE-120Published: September 17, 2018· Updated: Jun 17, 2026

8.1

CVSS v3.1

Official Description

An exploitable buffer overflow vulnerability exists in the DDNS client used by the Foscam C1 Indoor HD Camera running application firmware 2.52.2.43. On devices with DDNS enabled, an attacker who is able to intercept HTTP connections will be able to fully compromise the device by creating a rogue HTTP server.

NVD Source

Technical Analysis

CVE-2017-2856 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 complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.