Vulnerability intelligence
CVE-2026-44126
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.
CVSS Score
9.2
Critical
EPSS — Exploit Probability
0.5%
Riskier than 38% of all CVEs
Exploitation
Not in CISA KEV
No federal exploitation record
Remediation
unknown
Check vendor advisories
1 article across 1 outlet · first covered May 19, 2026 · latest May 19, 2026
Coverage timeline
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SEPPMail Secure E-Mail Gateway Vulnerabilities Enable RCE and Mail Traffic Accessthehackernews.com · May 19, 2026