How severe is CVE-2018-5447?

CVE-2018-5447 has a CVSS 3.x base score of 9.8, 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-2018-5447 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-5447?

CVE-2018-5447 affects Nrec Pcs-9611 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-5447?

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-2018-5447 published?

CVE-2018-5447 was published on 2018-01-25 and last updated on 2026-06-17.

CVE-2018-5447

CVE-2018-5447 is a critical-severity vulnerability in Nrec Pcs-9611 Firmware with a CVSS 3.x base score of 9.8. 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-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Nrec Pcs-9611 Firmware
Published: 2018-01-25
Last modified: 2026-06-17

Description

An Improper Input Validation issue was discovered in Nari PCS-9611 relay. An improper input validation vulnerability has been identified that affects a service within the software that may allow a remote attacker to arbitrarily read/access system resources and affect the availability of the system.

Frequently asked questions

What is CVE-2018-5447?: An Improper Input Validation issue was discovered in Nari PCS-9611 relay. An improper input validation vulnerability has been identified that affects a service within the software that may allow a remote attacker to arbitrarily read/access system resources and affect the availability of the system.
How severe is CVE-2018-5447?: CVE-2018-5447 has a CVSS 3.x base score of 9.8, 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-2018-5447 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-5447?: CVE-2018-5447 affects Nrec Pcs-9611 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-5447?: 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-2018-5447 published?: CVE-2018-5447 was published on 2018-01-25 and last updated on 2026-06-17.

References

https://ics-cert.us-cert.gov/advisories/ICSA-18-025-01

Affected products (1)

cpe:2.3:o:nrec:pcs-9611_firmware:-:*:*:*:*:*:*:*

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