How severe is CVE-2017-7928?

CVE-2017-7928 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-7928 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-7928?

CVE-2017-7928 primarily affects Selinc Sel-3620 Firmware. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-7928?

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

When was CVE-2017-7928 published?

CVE-2017-7928 was published on 2017-08-07 and last updated on 2026-06-17.

CVE-2017-7928

CVE-2017-7928 is a critical-severity vulnerability in Selinc Sel-3620 Firmware with a CVSS 3.x base score of 10.0. 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-284.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
CVSS v2: 7.5
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Selinc Sel-3620 Firmware
Published: 2017-08-07
Last modified: 2026-06-17

Description

An Improper Access Control issue was discovered in Schweitzer Engineering Laboratories (SEL) SEL-3620 and SEL-3622 Security Gateway Versions R202 and, R203, R203-V1, R203-V2 and, R204, R204-V1. The device does not properly enforce access control while configured for NAT port forwarding, which may allow for unauthorized communications to downstream devices.

Frequently asked questions

What is CVE-2017-7928?: An Improper Access Control issue was discovered in Schweitzer Engineering Laboratories (SEL) SEL-3620 and SEL-3622 Security Gateway Versions R202 and, R203, R203-V1, R203-V2 and, R204, R204-V1. The device does not properly enforce access control while configured for NAT port forwarding, which may allow for unauthorized communications to downstream devices.
How severe is CVE-2017-7928?: CVE-2017-7928 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-7928 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-7928?: CVE-2017-7928 primarily affects Selinc Sel-3620 Firmware. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-7928?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2017-7928 published?: CVE-2017-7928 was published on 2017-08-07 and last updated on 2026-06-17.

References

Affected products (12)

cpe:2.3:o:selinc:sel-3620_firmware:r202:*:*:*:*:*:*:*
cpe:2.3:o:selinc:sel-3620_firmware:r203:*:*:*:*:*:*:*
cpe:2.3:o:selinc:sel-3620_firmware:r203-v:*:*:*:*:*:*:*
cpe:2.3:o:selinc:sel-3620_firmware:r203-v1:*:*:*:*:*:*:*
cpe:2.3:o:selinc:sel-3620_firmware:r204:*:*:*:*:*:*:*
cpe:2.3:o:selinc:sel-3620_firmware:r204-v1:*:*:*:*:*:*:*
cpe:2.3:o:selinc:sel-3622_firmware:r202:*:*:*:*:*:*:*
cpe:2.3:o:selinc:sel-3622_firmware:r203:*:*:*:*:*:*:*
cpe:2.3:o:selinc:sel-3622_firmware:r203-v:*:*:*:*:*:*:*
cpe:2.3:o:selinc:sel-3622_firmware:r203-v1:*:*:*:*:*:*:*
cpe:2.3:o:selinc:sel-3622_firmware:r204:*:*:*:*:*:*:*
cpe:2.3:o:selinc:sel-3622_firmware:r204-v1:*:*:*:*:*:*:*

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