How severe is CVE-2019-9124?

CVE-2019-9124 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-2019-9124 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-9124?

CVE-2019-9124 affects D-link Dir-878 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-9124?

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-2019-9124 published?

CVE-2019-9124 was published on 2019-02-25 and last updated on 2026-06-17.

CVE-2019-9124

CVE-2019-9124 is a critical-severity vulnerability in D-link Dir-878 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-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: D-link Dir-878 Firmware
Published: 2019-02-25
Last modified: 2026-06-17

Description

An issue was discovered on D-Link DIR-878 1.12B01 devices. At the /HNAP1 URI, an attacker can log in with a blank password.

Frequently asked questions

What is CVE-2019-9124?: An issue was discovered on D-Link DIR-878 1.12B01 devices. At the /HNAP1 URI, an attacker can log in with a blank password.
How severe is CVE-2019-9124?: CVE-2019-9124 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-2019-9124 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-9124?: CVE-2019-9124 affects D-link Dir-878 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-9124?: 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-2019-9124 published?: CVE-2019-9124 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-878/blankpassword.md

Affected products (1)

cpe:2.3:o:d-link:dir-878_firmware:1.12b01:*:*:*:*:*:*:*

More vulnerabilities in D-link Dir-878 Firmware

CVE-2019-9125 — Critical (CVSS 9.8): An issue was discovered on D-Link DIR-878 1.12B01 devices. Because strncpy is misused, there is a stack-based buffer…
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