How severe is CVE-2017-2857?

CVE-2017-2857 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-2857 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-2857?

CVE-2017-2857 affects Foscam C1 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-2857?

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-2017-2857 published?

CVE-2017-2857 was published on 2018-09-17 and last updated on 2026-06-17.

CVE-2017-2857

CVE-2017-2857 is a high-severity vulnerability in Foscam C1 Firmware with a CVSS 3.x base score of 8.1. 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-120.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 9.3
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Foscam C1 Firmware
Published: 2018-09-17
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2017-2857?: 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.
How severe is CVE-2017-2857?: CVE-2017-2857 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-2857 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-2857?: CVE-2017-2857 affects Foscam C1 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-2857?: 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-2017-2857 published?: CVE-2017-2857 was published on 2018-09-17 and last updated on 2026-06-17.

References

https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0360

Affected products (1)

cpe:2.3:o:foscam:c1_firmware:2.52.2.43:*:*:*:*:*:*:*

More vulnerabilities in Foscam C1 Firmware

CVE-2017-2877 — Critical (CVSS 9.8): A missing error check exists in the Multi-Camera interface used by the Foscam C1 Indoor HD Camera running application…
CVE-2017-2875 — Critical (CVSS 9.1): An exploitable buffer overflow vulnerability exists in the Multi-Camera interface used by the Foscam C1 Indoor HD…
CVE-2017-2871 — High (CVSS 8.8): Insufficient security checks exist in the recovery procedure used by the Foscam C1 Indoor HD Camera running application…
CVE-2017-2855 — High (CVSS 8.1): An exploitable buffer overflow vulnerability exists in the DDNS client used by the Foscam C1 Indoor HD Camera running…
CVE-2017-2856 — High (CVSS 8.1): An exploitable buffer overflow vulnerability exists in the DDNS client used by the Foscam C1 Indoor HD Camera running…
CVE-2017-2854 — High (CVSS 8.1): An exploitable buffer overflow vulnerability exists in the DDNS client used by the Foscam C1 Indoor HD Camera running…

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