CVE Explorer
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.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"Secure Email Gateway","vendor":"SEPPmail AG","versions":[{"lessThan":"15.0.4","status":"affected","version":"0","versionType":"custom"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:105207a4d3adaf57bdc101f0e587018986002bbbec78a7db3eb094e4b99c4109 · sha256:3ed526b6a3940c42… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":9.2,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityIm…
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:105207a4d3adaf57bdc101f0e587018986002bbbec78a7db3eb094e4b99c4109 · sha256:3ed526b6a3940c42… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-502","description":"CWE-502 Deserialization of untrusted data","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:105207a4d3adaf57bdc101f0e587018986002bbbec78a7db3eb094e4b99c4109 · sha256:3ed526b6a3940c42… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"url":"https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html#security"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:105207a4d3adaf57bdc101f0e587018986002bbbec78a7db3eb094e4b99c4109 · sha256:3ed526b6a3940c42… · /containers/cna/references/0
{"url":"https://labs.infoguard.ch/posts/seppmail_secure_e-mail_gateway_rce_vulnerabilities_cve-2026-2743_cve-2026-7864_cve-2026-44127_cve-2026-44128/"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:105207a4d3adaf57bdc101f0e587018986002bbbec78a7db3eb094e4b99c4109 · sha256:3ed526b6a3940c42… · /containers/cna/references/1
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.