What is CVE-2025-61600?

CVE-2025-61600 is a high-severity vulnerability in Stalwartlabs Stalwart, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2025-10-02.

How severe is CVE-2025-61600?

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

Resource exhaustion in Stalwartlabs Stalwart

CVE-2025-61600

Stalwart is a mail and collaboration server. Versions 0.13.3 and below contain an unbounded memory allocation vulnerability in the IMAP protocol parser which allows remote attackers to exhaust server memory, potentially triggering the syst…

Vulnerability class: DoS (Denial of Service)

EPSS: 0.005 (40.4th 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

Stalwartlabs Stalwart — versions < 0.13.4

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2025-61600?: CVE-2025-61600 is a high-severity vulnerability in Stalwartlabs Stalwart, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2025-10-02.
How severe is CVE-2025-61600?: High severity. CVSS v3 base score is 7.5 out of 10.