How severe is CVE-2023-40265?

CVE-2023-40265 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-2023-40265 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-40265?

CVE-2023-40265 affects Mitel Unify Openscape Xpressions Webassistant. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-40265?

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.

Does CVE-2023-40265 have an EU (EUVD) identifier?

Yes. CVE-2023-40265 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-44862.

When was CVE-2023-40265 published?

CVE-2023-40265 was published on 2024-02-08 and last updated on 2026-06-17.

CVE-2023-40265

CVE-2023-40265 is a high-severity vulnerability in Mitel Unify Openscape Xpressions Webassistant 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-434.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-44862
Weakness: CWE-434
Affected product: Mitel Unify Openscape Xpressions Webassistant
Published: 2024-02-08
Last modified: 2026-06-17

Description

An issue was discovered in Atos Unify OpenScape Xpressions WebAssistant V7 before V7R1 FR5 HF42 P911. It allows authenticated remote code execution via file upload.

Frequently asked questions

What is CVE-2023-40265?: An issue was discovered in Atos Unify OpenScape Xpressions WebAssistant V7 before V7R1 FR5 HF42 P911. It allows authenticated remote code execution via file upload.
How severe is CVE-2023-40265?: CVE-2023-40265 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-2023-40265 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-40265?: CVE-2023-40265 affects Mitel Unify Openscape Xpressions Webassistant. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-40265?: 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.
Does CVE-2023-40265 have an EU (EUVD) identifier?: Yes. CVE-2023-40265 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-44862.
When was CVE-2023-40265 published?: CVE-2023-40265 was published on 2024-02-08 and last updated on 2026-06-17.

References

https://networks.unify.com/security/advisories/OBSO-2305-03.pdf

Affected products (1)

cpe:2.3:a:mitel:unify_openscape_xpressions_webassistant:*:*:*:*:*:*:*:*

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