How severe is CVE-2023-51987?

CVE-2023-51987 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-2023-51987 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-51987?

CVE-2023-51987 affects Dlink Dir-822 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-51987?

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.

Does CVE-2023-51987 have an EU (EUVD) identifier?

Yes. CVE-2023-51987 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-56666.

When was CVE-2023-51987 published?

CVE-2023-51987 was published on 2024-01-11 and last updated on 2026-06-17.

CVE-2023-51987

CVE-2023-51987 is a critical-severity vulnerability in Dlink Dir-822 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-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-56666
Weakness: CWE-306
Affected product: Dlink Dir-822 Firmware
Published: 2024-01-11
Last modified: 2026-06-17

Description

D-Link DIR-822+ V1.0.2 contains a login bypass in the HNAP1 interface, which allows attackers to log in to administrator accounts with empty passwords.

Frequently asked questions

What is CVE-2023-51987?: D-Link DIR-822+ V1.0.2 contains a login bypass in the HNAP1 interface, which allows attackers to log in to administrator accounts with empty passwords.
How severe is CVE-2023-51987?: CVE-2023-51987 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-2023-51987 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-51987?: CVE-2023-51987 affects Dlink Dir-822 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-51987?: 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.
Does CVE-2023-51987 have an EU (EUVD) identifier?: Yes. CVE-2023-51987 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-56666.
When was CVE-2023-51987 published?: CVE-2023-51987 was published on 2024-01-11 and last updated on 2026-06-17.

References

https://github.com/funny-mud-peee/IoT-vuls/tree/main/dir822%2B/2

Affected products (1)

cpe:2.3:o:dlink:dir-822_firmware:1.0.2:*:*:*:*:*:*:*

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CVE-2018-19987 — Critical (CVSS 9.8): D-Link DIR-822 Rev.B 202KRb06, DIR-822 Rev.C 3.10B06, DIR-860L Rev.B 2.03.B03, DIR-868L Rev.B 2.05B02, DIR-880L Rev.A…
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