How severe is CVE-2018-20675?

CVE-2018-20675 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-2018-20675 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20675?

CVE-2018-20675 primarily affects Dlink Dir-822 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-20675?

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-2018-20675 published?

CVE-2018-20675 was published on 2019-01-09 and last updated on 2026-06-17.

CVE-2018-20675

CVE-2018-20675 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-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Dlink Dir-822 Firmware
Published: 2019-01-09
Last modified: 2026-06-17

Description

D-Link DIR-822 C1 before v3.11B01Beta, DIR-822-US C1 before v3.11B01Beta, DIR-850L A* before v1.21B08Beta, DIR-850L B* before v2.22B03Beta, and DIR-880L A* before v1.20B02Beta devices allow authentication bypass.

Frequently asked questions

What is CVE-2018-20675?: D-Link DIR-822 C1 before v3.11B01Beta, DIR-822-US C1 before v3.11B01Beta, DIR-850L A* before v1.21B08Beta, DIR-850L B* before v2.22B03Beta, and DIR-880L A* before v1.20B02Beta devices allow authentication bypass.
How severe is CVE-2018-20675?: CVE-2018-20675 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-2018-20675 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20675?: CVE-2018-20675 primarily affects Dlink Dir-822 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-20675?: 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-2018-20675 published?: CVE-2018-20675 was published on 2019-01-09 and last updated on 2026-06-17.

References

https://securityadvisories.dlink.com/announcement/publication.aspx?name=SAP10101

Affected products (6)

cpe:2.3:o:dlink:dir-822_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dir-822-us_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dir-850l_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dir-850l_firmware:2.22b02:beta:*:*:*:*:*:*
cpe:2.3:o:dlink:dir-880l_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dir-880l_firmware:1.20b01:beta:*:*:*:*:*:*

More vulnerabilities in Dlink Dir-822 Firmware

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CVE-2019-17621 — Critical (CVSS 9.8): The UPnP endpoint URL /gena.cgi in the D-Link DIR-859 Wi-Fi router 1.05 and 1.06B01 Beta01 allows an Unauthenticated…
CVE-2018-19989 — Critical (CVSS 9.8): In the /HNAP1/SetQoSSettings message, the uplink parameter is vulnerable, and the vulnerability affects D-Link DIR-822…
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…
CVE-2016-6563 — Critical (CVSS 9.8): Processing malformed SOAP messages when performing the HNAP Login action causes a buffer overflow in the stack in some…

All CVEs affecting Dlink Dir-822 Firmware →

Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →