How severe is CVE-2017-9100?

CVE-2017-9100 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-9100 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 85% (100th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-9100?

CVE-2017-9100 affects Dlink Dir-600m Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-9100?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-9100 published?

CVE-2017-9100 was published on 2017-05-21 and last updated on 2026-06-17.

CVE-2017-9100

CVE-2017-9100 is a high-severity vulnerability in Dlink Dir-600m Firmware with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 85% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-287.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 8.3
EPSS exploit prediction: 85% (100th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Dlink Dir-600m Firmware
Published: 2017-05-21
Last modified: 2026-06-17

Description

login.cgi on D-Link DIR-600M devices with firmware 3.04 allows remote attackers to bypass authentication by entering more than 20 blank spaces in the password field during an admin login attempt.

Frequently asked questions

What is CVE-2017-9100?: login.cgi on D-Link DIR-600M devices with firmware 3.04 allows remote attackers to bypass authentication by entering more than 20 blank spaces in the password field during an admin login attempt.
How severe is CVE-2017-9100?: CVE-2017-9100 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-9100 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 85% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-9100?: CVE-2017-9100 affects Dlink Dir-600m Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-9100?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-9100 published?: CVE-2017-9100 was published on 2017-05-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:dlink:dir-600m_firmware:3.04:*:*:*:*:*:*:*

More vulnerabilities in Dlink Dir-600m Firmware

CVE-2019-13101 — Critical (CVSS 9.8): An issue was discovered on D-Link DIR-600M 3.02, 3.03, 3.04, and 3.06 devices. wan.htm can be accessed directly without…
CVE-2019-7736 — Critical (CVSS 9.8): D-Link DIR-600M C1 3.04 devices allow authentication bypass via a direct request to the wan.htm page. NOTE: this may…
CVE-2024-1786 — High (CVSS 7.5): ** UNSUPPORTED WHEN ASSIGNED ** A vulnerability, which was classified as critical, has been found in D-Link DIR-600M C1…
CVE-2020-13960 — High (CVSS 7.5): D-Link DSL 2730-U IN_1.10 and IN_1.11 and DIR-600M 3.04 devices have the domain.name string in the DNS resolver search…
CVE-2018-16605 — Medium (CVSS 5.4): D-Link DIR-600M devices allow XSS via the Hostname and Username fields in the Dynamic DNS Configuration page.

All CVEs affecting Dlink Dir-600m 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 →