How severe is CVE-2018-4073?

CVE-2018-4073 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-4073 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 25% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-4073?

CVE-2018-4073 affects Sierrawireless Airlink Es450 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-4073?

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-2018-4073 published?

CVE-2018-4073 was published on 2019-05-06 and last updated on 2026-06-17.

CVE-2018-4073

CVE-2018-4073 is a high-severity vulnerability in Sierrawireless Airlink Es450 Firmware with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 25% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-732.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 25% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-732
Affected product: Sierrawireless Airlink Es450 Firmware
Published: 2019-05-06
Last modified: 2026-06-17

Description

An exploitable Permission Assignment vulnerability exists in the ACEManager EmbeddedAceSet_Task.cgi functionality of Sierra Wireless AirLink ES450 FW 4.9.3. The the binary the endpoint /cgi-bin/Embeded_Ace_TLSet_Task.cgi is a very similar endpoint that is designed for use with setting table values that can cause an arbitrary setting writes, resulting in the unverified changes to any system setting. An attacker can make an authenticated HTTP request, or run the binary as any user, to trigger this vulnerability.

Frequently asked questions

What is CVE-2018-4073?: An exploitable Permission Assignment vulnerability exists in the ACEManager EmbeddedAceSet_Task.cgi functionality of Sierra Wireless AirLink ES450 FW 4.9.3. The the binary the endpoint /cgi-bin/Embeded_Ace_TLSet_Task.cgi is a very similar endpoint that is designed for use with setting table values that can cause an arbitrary setting writes, resulting in the unverified changes to any system setting. An attacker can make an authenticated HTTP request, or run the binary as any user, to trigger this vulnerability.
How severe is CVE-2018-4073?: CVE-2018-4073 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-4073 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 25% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-4073?: CVE-2018-4073 affects Sierrawireless Airlink Es450 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-4073?: 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-2018-4073 published?: CVE-2018-4073 was published on 2019-05-06 and last updated on 2026-06-17.

References

https://talosintelligence.com/vulnerability_reports/TALOS-2018-0756

Affected products (1)

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

More vulnerabilities in Sierrawireless Airlink Es450 Firmware

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-2018-4066 — High (CVSS 8.8): An exploitable cross-site request forgery vulnerability exists in the ACEManager functionality of Sierra Wireless…
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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