How severe is CVE-2019-9123?

CVE-2019-9123 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-2019-9123 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-9123?

CVE-2019-9123 affects Dlink Dir-825 Rev.b Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-9123?

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-2019-9123 published?

CVE-2019-9123 was published on 2019-02-25 and last updated on 2026-06-17.

CVE-2019-9123

CVE-2019-9123 is a critical-severity vulnerability in Dlink Dir-825 Rev.b 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-521.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-521
Affected product: Dlink Dir-825 Rev.b Firmware
Published: 2019-02-25
Last modified: 2026-06-17

Description

An issue was discovered on D-Link DIR-825 Rev.B 2.10 devices. The "user" account has a blank password.

Frequently asked questions

What is CVE-2019-9123?: An issue was discovered on D-Link DIR-825 Rev.B 2.10 devices. The "user" account has a blank password.
How severe is CVE-2019-9123?: CVE-2019-9123 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-2019-9123 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-9123?: CVE-2019-9123 affects Dlink Dir-825 Rev.b Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-9123?: 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-2019-9123 published?: CVE-2019-9123 was published on 2019-02-25 and last updated on 2026-06-17.

References

https://github.com/WhooAmii/whooamii.github.io/blob/master/2018/DIR-825/Permission%20access%20control.md

Affected products (1)

cpe:2.3:o:dlink:dir-825_rev.b_firmware:2.10:*:*:*:*:*:*:*

More vulnerabilities in Dlink Dir-825 Rev.b Firmware

CVE-2019-9122 — High (CVSS 8.8): An issue was discovered on D-Link DIR-825 Rev.B 2.10 devices. They allow remote attackers to execute arbitrary commands…
CVE-2019-9126 — High (CVSS 7.5): An issue was discovered on D-Link DIR-825 Rev.B 2.10 devices. There is an information disclosure vulnerability via…

All CVEs affecting Dlink Dir-825 Rev.b Firmware →

Other CWE-521 (Weak Password Requirements) vulnerabilities

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CVE-2025-12552 — Critical (CVSS 9.8): Insufficient Password Policy.This issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1.19.5.
CVE-2025-11200 — Critical (CVSS 9.8): MLflow Weak Password Requirements Authentication Bypass Vulnerability. This vulnerability allows remote attackers to…
CVE-2025-12364 — Critical (CVSS 9.8): Weak Password Policy.This issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1.19.5.

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