How severe is CVE-2017-8217?

CVE-2017-8217 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2017-8217 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8217?

CVE-2017-8217 primarily affects Tp-link C2 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-8217?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-8217 published?

CVE-2017-8217 was published on 2017-04-25 and last updated on 2026-06-17.

CVE-2017-8217

CVE-2017-8217 is a medium-severity vulnerability in Tp-link C2 Firmware with a CVSS 3.x base score of 5.3. 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-862.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Tp-link C2 Firmware
Published: 2017-04-25
Last modified: 2026-06-17

Description

TP-Link C2 and C20i devices through firmware 0.9.1 4.2 v0032.0 Build 160706 Rel.37961n have too permissive iptables rules, e.g., SNMP is not blocked on any interface.

Frequently asked questions

What is CVE-2017-8217?: TP-Link C2 and C20i devices through firmware 0.9.1 4.2 v0032.0 Build 160706 Rel.37961n have too permissive iptables rules, e.g., SNMP is not blocked on any interface.
How severe is CVE-2017-8217?: CVE-2017-8217 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2017-8217 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8217?: CVE-2017-8217 primarily affects Tp-link C2 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-8217?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-8217 published?: CVE-2017-8217 was published on 2017-04-25 and last updated on 2026-06-17.

References

https://pierrekim.github.io/blog/2017-02-09-tplink-c2-and-c20i-vulnerable.html

Affected products (2)

cpe:2.3:o:tp-link:c2_firmware:*:rel.37961n:*:*:*:*:*:*
cpe:2.3:o:tp-link:c20i_firmware:*:rel.37961n:*:*:*:*:*:*

More vulnerabilities in Tp-link C2 Firmware

CVE-2017-8220 — Critical (CVSS 9.9): TP-Link C2 and C20i devices through firmware 0.9.1 4.2 v0032.0 Build 160706 Rel.37961n allow remote code execution with…
CVE-2017-8218 — Critical (CVSS 9.8): vsftpd on TP-Link C2 and C20i devices through firmware 0.9.1 4.2 v0032.0 Build 160706 Rel.37961n has a backdoor admin…
CVE-2017-8219 — Medium (CVSS 6.5): TP-Link C2 and C20i devices through firmware 0.9.1 4.2 v0032.0 Build 160706 Rel.37961n allow DoSing the HTTP server via…

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