Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-84832
SEPPmail AG SEPPmail Secure Email Gateway (SEG) — Unsafe deserialization in the REST interface
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N L N H N H H H 8.6 .0064 48.7 —
AFFECTED
Product Versions Fixed
SEPPmail Secure Email Gateway (SEG) unspecified —
TIMELINE
Sep 2 Reserved by NCSC.ch
Sep 3 EXPLOIT PUBLISHED — CVE-2026-84832 (SEPPmail AG SEPPmail Secure Email Gateway (SEG)). Public exploit reference added.
Sep 3 Published (CNA: NCSC.ch)
Description
SEPPmail Secure Email Gateway before 15.0.6 deserializes attacker-controlled data in a privileged REST import workflow without adequate validation. An attacker with a privileged API token can execute arbitrary commands with "nobody" privileges.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| September 2, 2026 | Reserved | Reserved by NCSC.ch |
| September 3, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-84832 (SEPPmail AG SEPPmail Secure Email Gateway (SEG)). Public exploit reference added. |
| September 3, 2026 | Published | Published (CNA: NCSC.ch) |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| SEPPmail AG | SEPPmail Secure Email Gateway (SEG) | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-84832 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
