How severe is CVE-2018-5789?

CVE-2018-5789 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-5789 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-5789?

CVE-2018-5789 affects Extremewireless Wing. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-5789?

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-2018-5789 published?

CVE-2018-5789 was published on 2018-02-05 and last updated on 2026-06-17.

CVE-2018-5789

CVE-2018-5789 is a high-severity vulnerability in Extremewireless Wing with a CVSS 3.x base score of 7.5. 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-611.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-611
Affected product: Extremewireless Wing
Published: 2018-02-05
Last modified: 2026-06-17

Description

An issue was discovered in Extreme Networks ExtremeWireless WiNG 5.x before 5.8.6.9 and 5.9.x before 5.9.1.3. There is a Remote, Unauthenticated XML Entity Expansion Denial of Service on the WiNG Access Point / Controller via crafted XML entities to the Web User Interface.

Frequently asked questions

What is CVE-2018-5789?: An issue was discovered in Extreme Networks ExtremeWireless WiNG 5.x before 5.8.6.9 and 5.9.x before 5.9.1.3. There is a Remote, Unauthenticated XML Entity Expansion Denial of Service on the WiNG Access Point / Controller via crafted XML entities to the Web User Interface.
How severe is CVE-2018-5789?: CVE-2018-5789 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-5789 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-5789?: CVE-2018-5789 affects Extremewireless Wing. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-5789?: 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-2018-5789 published?: CVE-2018-5789 was published on 2018-02-05 and last updated on 2026-06-17.

References

https://gtacknowledge.extremenetworks.com/articles/Vulnerability_Notice/VN-2018-003

Affected products (1)

cpe:2.3:o:extremewireless:wing:*:*:*:*:*:*:*:*

More vulnerabilities in Extremewireless Wing

CVE-2018-5788 — High (CVSS 7.5): An issue was discovered in Extreme Networks ExtremeWireless WiNG 5.x before 5.8.6.9 and 5.9.x before 5.9.1.3. There is…
CVE-2018-5796 — High (CVSS 7.2): An issue was discovered in Extreme Networks ExtremeWireless WiNG 5.x before 5.8.6.9 and 5.9.x before 5.9.1.3. There is…
CVE-2018-5793 — Medium (CVSS 5.9): An issue was discovered in Extreme Networks ExtremeWireless WiNG 5.x before 5.8.6.9 and 5.9.x before 5.9.1.3. There is…
CVE-2018-5792 — Medium (CVSS 5.9): An issue was discovered in Extreme Networks ExtremeWireless WiNG 5.x before 5.8.6.9 and 5.9.x before 5.9.1.3. There is…
CVE-2018-5791 — Medium (CVSS 5.9): An issue was discovered in Extreme Networks ExtremeWireless WiNG 5.x before 5.8.6.9 and 5.9.x before 5.9.1.3. There is…
CVE-2018-5794 — Medium (CVSS 5.3): An issue was discovered in Extreme Networks ExtremeWireless WiNG 5.x before 5.8.6.9 and 5.9.x before 5.9.1.3. There is…

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