CVE-2026-44126: exploitation status and patch state

CVE-2026-44126 · EPSS <1%

SEPPmail Secure Email Gateway before version 15.0.4 insecurely deserializes untrusted data, which can be reached from the new GINA UI and may allow unauthenticated remote attackers to execute code via a crafted serialized object.

Is CVE-2026-44126 exploited?

• Not in the CISA KEV catalog.
• EPSS puts exploitation in the next 30 days at <1%.
• Public exploit code: none found in monitored sources.

Which products and versions are affected?

No affected package list recorded here yet.

Is there a patch?

No patch identifier recorded here yet.

What PlainSec published about CVE-2026-44126

• Mail Gateway Flaws Expose Traffic and Internal Access (2026-05-20)

Primary sources

• NVD record

What this record does not say

• No CVSS score from NVD.
• No affected package data.
• No patch identifier.

KEV and EPSS are re-checked daily. Record last updated 2026-08-11.