How severe is CVE-2021-45043?

CVE-2021-45043 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-45043 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 33% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45043?

CVE-2021-45043 affects Hd-network Real-time Monitoring System Project Hd-network Real-time Monitoring System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-45043?

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-2021-45043 published?

CVE-2021-45043 was published on 2021-12-15 and last updated on 2026-06-17.

CVE-2021-45043

CVE-2021-45043 is a high-severity vulnerability in Hd-network Real-time Monitoring System Project Hd-network Real-time Monitoring System with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 33% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 33% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Hd-network Real-time Monitoring System Project Hd-network Real-time Monitoring System
Published: 2021-12-15
Last modified: 2026-06-17

Description

HD-Network Real-time Monitoring System 2.0 allows ../ directory traversal to read /etc/shadow via the /language/lang s_Language parameter.

Frequently asked questions

What is CVE-2021-45043?: HD-Network Real-time Monitoring System 2.0 allows ../ directory traversal to read /etc/shadow via the /language/lang s_Language parameter.
How severe is CVE-2021-45043?: CVE-2021-45043 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-45043 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 33% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45043?: CVE-2021-45043 affects Hd-network Real-time Monitoring System Project Hd-network Real-time Monitoring System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-45043?: 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-2021-45043 published?: CVE-2021-45043 was published on 2021-12-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:hd-network_real-time_monitoring_system_project:hd-network_real-time_monitoring_system:2.0:*:*:*:*:*:*:*

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