How severe is CVE-2018-17777?

CVE-2018-17777 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-2018-17777 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-17777?

CVE-2018-17777 affects Dlink Dva-5592 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-17777?

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-2018-17777 published?

CVE-2018-17777 was published on 2018-12-18 and last updated on 2026-06-17.

CVE-2018-17777

CVE-2018-17777 is a critical-severity vulnerability in Dlink Dva-5592 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% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Dlink Dva-5592 Firmware
Published: 2018-12-18
Last modified: 2026-06-17

Description

An issue was discovered on D-Link DVA-5592 A1_WI_20180823 devices. If the PIN of the page "/ui/cbpc/login" is the default Parental Control PIN (0000), it is possible to bypass the login form by editing the path of the cookie "sid" generated by the page. The attacker will have access to the router control panel with administrator privileges.

Frequently asked questions

What is CVE-2018-17777?: An issue was discovered on D-Link DVA-5592 A1_WI_20180823 devices. If the PIN of the page "/ui/cbpc/login" is the default Parental Control PIN (0000), it is possible to bypass the login form by editing the path of the cookie "sid" generated by the page. The attacker will have access to the router control panel with administrator privileges.
How severe is CVE-2018-17777?: CVE-2018-17777 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-2018-17777 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-17777?: CVE-2018-17777 affects Dlink Dva-5592 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-17777?: 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-2018-17777 published?: CVE-2018-17777 was published on 2018-12-18 and last updated on 2026-06-17.

References

https://www.gubello.me/blog/router-dlink-dva-5592-authentication-bypass/

Affected products (1)

cpe:2.3:o:dlink:dva-5592_firmware:a1_wi_20180823:*:*:*:*:*:*:*

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