How severe is CVE-2019-9975?

CVE-2019-9975 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-2019-9975 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-9975?

CVE-2019-9975 affects Dasannetworks H660rm Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-9975?

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-2019-9975 published?

CVE-2019-9975 was published on 2019-04-11 and last updated on 2026-06-17.

CVE-2019-9975

CVE-2019-9975 is a high-severity vulnerability in Dasannetworks H660rm Firmware with a CVSS 3.x base score of 7.5. 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-798.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Dasannetworks H660rm Firmware
Published: 2019-04-11
Last modified: 2026-06-17

Description

DASAN H660RM devices with firmware 1.03-0022 use a hard-coded key for logs encryption. Data stored using this key can be decrypted by anyone able to access this key.

Frequently asked questions

What is CVE-2019-9975?: DASAN H660RM devices with firmware 1.03-0022 use a hard-coded key for logs encryption. Data stored using this key can be decrypted by anyone able to access this key.
How severe is CVE-2019-9975?: CVE-2019-9975 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-2019-9975 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-9975?: CVE-2019-9975 affects Dasannetworks H660rm Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-9975?: 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-2019-9975 published?: CVE-2019-9975 was published on 2019-04-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:dasannetworks:h660rm_firmware:1.03-0022:*:*:*:*:*:*:*

More vulnerabilities in Dasannetworks H660rm Firmware

CVE-2019-9974 — Critical (CVSS 9.1): diag_tool.cgi on DASAN H660RM GPON routers with firmware 1.03-0022 lacks any authorization check, which allows remote…
CVE-2019-9976 — High (CVSS 8.8): The Boa server configuration on DASAN H660RM devices with firmware 1.03-0022 logs POST data to the /tmp/boa-temp file,…

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