CVE-2026-93563 Unspecified Product - Denial of Service

An unspecified vendor's product contains a denial of service caused by unbounded multi-line response accumulation in SmtpResponseDecoder, letting attackers exhaust memory remotely, exploit requires crafted SMTP responses.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.33% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
18 September 2026
Updated
15 October 2026
Weakness
CWE-1035

Vendor fix

Update to the latest version to address the vulnerability.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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