How severe is CVE-2018-4066?

CVE-2018-4066 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-4066 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-4066?

CVE-2018-4066 affects Sierrawireless Airlink Es450 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-4066?

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-2018-4066 published?

CVE-2018-4066 was published on 2019-05-06 and last updated on 2026-06-17.

CVE-2018-4066

CVE-2018-4066 is a high-severity vulnerability in Sierrawireless Airlink Es450 Firmware with a CVSS 3.x base score of 8.8. 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-352.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Sierrawireless Airlink Es450 Firmware
Published: 2019-05-06
Last modified: 2026-06-17

Description

An exploitable cross-site request forgery vulnerability exists in the ACEManager functionality of Sierra Wireless AirLink ES450 FW 4.9.3. A specially crafted HTTP request can cause an authenticated user to perform privileged requests unknowingly, resulting in unauthenticated requests being requested through an authenticated user. An attacker can get an authenticated user to request authenticated pages on the attacker's behalf to trigger this vulnerability.

Frequently asked questions

What is CVE-2018-4066?: An exploitable cross-site request forgery vulnerability exists in the ACEManager functionality of Sierra Wireless AirLink ES450 FW 4.9.3. A specially crafted HTTP request can cause an authenticated user to perform privileged requests unknowingly, resulting in unauthenticated requests being requested through an authenticated user. An attacker can get an authenticated user to request authenticated pages on the attacker's behalf to trigger this vulnerability.
How severe is CVE-2018-4066?: CVE-2018-4066 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-4066 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-4066?: CVE-2018-4066 affects Sierrawireless Airlink Es450 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-4066?: 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-2018-4066 published?: CVE-2018-4066 was published on 2019-05-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:sierrawireless:airlink_es450_firmware:4.9.3:*:*:*:*:*:*:*

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CVE-2018-4073 — High (CVSS 8.8): An exploitable Permission Assignment vulnerability exists in the ACEManager EmbeddedAceSet_Task.cgi functionality of…
CVE-2018-4072 — High (CVSS 8.8): An exploitable Permission Assignment vulnerability exists in the ACEManager EmbeddedAceSet_Task.cgi functionality of…
CVE-2018-4071 — High (CVSS 8.8): An exploitable Information Disclosure vulnerability exists in the ACEManager EmbeddedAceGet_Task.cgi functionality of…
CVE-2018-4070 — High (CVSS 8.8): An exploitable Information Disclosure vulnerability exists in the ACEManager EmbeddedAceGet_Task.cgi functionality of…
CVE-2018-4061 — High (CVSS 8.8): An exploitable command injection vulnerability exists in the ACEManager iplogging.cgi functionality of Sierra Wireless…
CVE-2018-4062 — High (CVSS 8.1): A hard-coded credentials vulnerability exists in the snmpd function of the Sierra Wireless AirLink ES450 FW 4.9.3.…

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