How severe is CVE-2018-15479?

CVE-2018-15479 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-15479 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-15479?

CVE-2018-15479 primarily affects Mystrom Wifi Switch 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-2018-15479?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-15479 published?

CVE-2018-15479 was published on 2018-08-30 and last updated on 2026-06-17.

CVE-2018-15479

CVE-2018-15479 is a medium-severity vulnerability in Mystrom Wifi Switch Firmware with a CVSS 3.x base score of 6.5. 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: Medium (CVSS 3.x base score 6.5)
CVSS v2: 6.4
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Mystrom Wifi Switch Firmware
Published: 2018-08-30
Last modified: 2026-06-17

Description

An issue was discovered in myStrom WiFi Switch V1 before 2.66, WiFi Switch V2 before 3.80, WiFi Switch EU before 3.80, WiFi Bulb before 2.58, WiFi LED Strip before 3.80, WiFi Button before 2.73, and WiFi Button Plus before 2.73. Devices did not authenticate themselves to the cloud in device to cloud communication. This lack of device authentication allowed an attacker to impersonate any device by guessing or learning their MAC address.

Frequently asked questions

What is CVE-2018-15479?: An issue was discovered in myStrom WiFi Switch V1 before 2.66, WiFi Switch V2 before 3.80, WiFi Switch EU before 3.80, WiFi Bulb before 2.58, WiFi LED Strip before 3.80, WiFi Button before 2.73, and WiFi Button Plus before 2.73. Devices did not authenticate themselves to the cloud in device to cloud communication. This lack of device authentication allowed an attacker to impersonate any device by guessing or learning their MAC address.
How severe is CVE-2018-15479?: CVE-2018-15479 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-15479 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-15479?: CVE-2018-15479 primarily affects Mystrom Wifi Switch 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-2018-15479?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-15479 published?: CVE-2018-15479 was published on 2018-08-30 and last updated on 2026-06-17.

References

https://www.swisscom.ch/content/dam/swisscom/de/about/nachhaltigkeit/digitale-schweiz/sicherheit/bug-bounty/files/cve-2018-15476ff.txt

Affected products (6)

cpe:2.3:o:mystrom:wifi_switch_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mystrom:wifi_button_plus_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mystrom:wifi_button_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mystrom:wifi_switch_eu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mystrom:wifi_bulb_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mystrom:wifi_led_strip_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Mystrom Wifi Switch Firmware

CVE-2018-15477 — Critical (CVSS 9.8): myStrom WiFi Switch V1 devices before 2.66 did not sanitize a parameter received from the cloud that was used in an OS…
CVE-2018-15480 — High (CVSS 8.8): An issue was discovered in myStrom WiFi Switch V1 before 2.66, WiFi Switch V2 before 3.80, WiFi Switch EU before 3.80,…
CVE-2018-15478 — High (CVSS 8.1): An issue was discovered in myStrom WiFi Switch V1 before 2.66, WiFi Switch V2 before 3.80, WiFi Switch EU before 3.80,…
CVE-2018-15476 — High (CVSS 8.1): An issue was discovered in myStrom WiFi Switch V1 before 2.66, WiFi Switch V2 before 3.80, WiFi Switch EU before 3.80,…

All CVEs affecting Mystrom Wifi Switch 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 →