How severe is CVE-2017-16721?

CVE-2017-16721 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2017-16721 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-16721?

CVE-2017-16721 primarily affects Geovap Reliance-scada. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-16721?

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

When was CVE-2017-16721 published?

CVE-2017-16721 was published on 2017-12-04 and last updated on 2026-06-17.

CVE-2017-16721

CVE-2017-16721 is a medium-severity vulnerability in Geovap Reliance-scada with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Geovap Reliance-scada
Published: 2017-12-04
Last modified: 2026-06-17

Description

A Cross-site Scripting issue was discovered in Geovap Reliance SCADA Version 4.7.3 Update 2 and prior. This vulnerability could allow an unauthenticated attacker to inject arbitrary code.

Frequently asked questions

What is CVE-2017-16721?: A Cross-site Scripting issue was discovered in Geovap Reliance SCADA Version 4.7.3 Update 2 and prior. This vulnerability could allow an unauthenticated attacker to inject arbitrary code.
How severe is CVE-2017-16721?: CVE-2017-16721 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2017-16721 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-16721?: CVE-2017-16721 primarily affects Geovap Reliance-scada. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-16721?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-16721 published?: CVE-2017-16721 was published on 2017-12-04 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:a:geovap:reliance-scada:*:*:*:*:*:*:*:*
cpe:2.3:a:geovap:reliance-scada:4.7.2:-:*:*:*:*:*:*
cpe:2.3:a:geovap:reliance-scada:4.7.2:update1:*:*:*:*:*:*
cpe:2.3:a:geovap:reliance-scada:4.7.2:update2:*:*:*:*:*:*
cpe:2.3:a:geovap:reliance-scada:4.7.3:-:*:*:*:*:*:*
cpe:2.3:a:geovap:reliance-scada:4.7.3:update1:*:*:*:*:*:*
cpe:2.3:a:geovap:reliance-scada:4.7.3:update2:*:*:*:*:*:*

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