What is CVE-2023-24603?

CVE-2023-24603 is a medium-severity vulnerability in Open-Xchange Ox App Suite. CVSS score: 6.5/10. Published 2023-05-29.

How severe is CVE-2023-24603?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Open-Xchange Ox App Suite

CVE-2023-24603

OX App Suite before backend 7.10.6-rev37 does not check size limits when downloading, e.g., potentially allowing a crafted iCal feed to provide an unlimited amount of data.

Published 2023-05-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.008 (53.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Open-Xchange Ox App Suite — versions 7.10.6

References

open-xchange.com (Product)
seclists.org/fulldisclosure/2023/May/3 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2023-24603?: CVE-2023-24603 is a medium-severity vulnerability in Open-Xchange Ox App Suite. CVSS score: 6.5/10. Published 2023-05-29.
How severe is CVE-2023-24603?: Medium severity. CVSS v3 base score is 6.5 out of 10.