CVE-2026-0689

CVE-2026-0689 is a medium-severity vulnerability in Extremenetworks Extremecloud Iq Site Engine with a CVSS 3.x base score of 4.9. 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-522.

Key facts

Description

In ExtremeCloud IQ – Site Engine (XIQ‑SE) before 26.2.10, a vulnerability in the NAC administration interface allows an authenticated NAC administrator to retrieve masked sensitive parameters from HTTP responses. Although credentials appear redacted in the user interface, the application returns the underlying credential values in the HTTP response, enabling an authorized administrator to recover stored secrets that may exceed their intended access. We would like to thank the Lockheed Martin Red Team for responsibly reporting this issue and working with us through coordinated disclosure.

Frequently asked questions

What is CVE-2026-0689?
In ExtremeCloud IQ – Site Engine (XIQ‑SE) before 26.2.10, a vulnerability in the NAC administration interface allows an authenticated NAC administrator to retrieve masked sensitive parameters from HTTP responses. Although credentials appear redacted in the user interface, the application returns the underlying credential values in the HTTP response, enabling an authorized administrator to recover stored secrets that may exceed their intended access. We would like to thank the Lockheed Martin Red Team for responsibly reporting this issue and working with us through coordinated disclosure.
How severe is CVE-2026-0689?
CVE-2026-0689 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-0689 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-0689?
CVE-2026-0689 affects Extremenetworks Extremecloud Iq Site Engine. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-0689?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-0689 have an EU (EUVD) identifier?
Yes. CVE-2026-0689 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9177.
When was CVE-2026-0689 published?
CVE-2026-0689 was published on 2026-03-02 and last updated on 2026-06-17.

References

Affected products (1)

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