How severe is CVE-2026-40118?

CVE-2026-40118 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-40118 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-40118?

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

Does CVE-2026-40118 have an EU (EUVD) identifier?

Yes. CVE-2026-40118 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23192.

When was CVE-2026-40118 published?

CVE-2026-40118 was published on 2026-04-16 and last updated on 2026-06-17.

CVE-2026-40118

CVE-2026-40118 is a medium-severity vulnerability with a CVSS 3.x base score of 6.3. 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-941.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v4: 5.1
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-23192
Weakness: CWE-941
Published: 2026-04-16
Last modified: 2026-06-17

Description

UDP Console provided by Arcserve contains an incorrectly specified destination in a communication channel vulnerability. When a user configures an activation server hostname of the affected product to a dummy URL, the product may unintentionally communicate with the dummy domain, causing information disclosure.

Frequently asked questions

What is CVE-2026-40118?: UDP Console provided by Arcserve contains an incorrectly specified destination in a communication channel vulnerability. When a user configures an activation server hostname of the affected product to a dummy URL, the product may unintentionally communicate with the dummy domain, causing information disclosure.
How severe is CVE-2026-40118?: CVE-2026-40118 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-40118 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-40118?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-40118 have an EU (EUVD) identifier?: Yes. CVE-2026-40118 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23192.
When was CVE-2026-40118 published?: CVE-2026-40118 was published on 2026-04-16 and last updated on 2026-06-17.

References

Other CWE-941 vulnerabilities

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CVE-2022-4847 — Medium (CVSS 6.5): Incorrectly Specified Destination in a Communication Channel in GitHub repository usememos/memos prior to 0.9.1.
CVE-2023-33198 — Medium (CVSS 6.1): tgstation-server is a production scale tool for BYOND server management. The DreamMaker API (DMAPI) chat channel cache…

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