What is CVE-2025-53603?

CVE-2025-53603 is a high-severity vulnerability in Alinto Sope, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2025-07-05.

How severe is CVE-2025-53603?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2025-53603 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

NULL pointer dereference in Alinto Sope

CVE-2025-53603

In Alinto SOPE SOGo 2.0.2 through 5.12.2, sope-core/NGExtensions/NGHashMap.m allows a NULL pointer dereference and SOGo crash via a request in which a parameter in the query string is a duplicate of a parameter in the POST body.

EPSS: 0.006 (44.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Alinto Sope — versions SOGo 2.0.2

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

Public proof-of-concept exploits

w4zu/Debian_

References

Frequently asked questions

What is CVE-2025-53603?: CVE-2025-53603 is a high-severity vulnerability in Alinto Sope, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2025-07-05.
How severe is CVE-2025-53603?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2025-53603 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.