CVE-2026-8811 | BDVDB-2026-341513 Detail

SEPPmailSecure Email Gateway

Description#

SEPPmail versions before 15.0.5 allow improper handling of attachment filenames during encrypted PDF generation. An attacker can exploit this to create new files outside the intended directory, potentially placing files in web-accessible locations.

Impact#

CAPEC-126 Path Traversal

Weaknesses#

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

References#

https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html#possible-path-traversal-vulnerability

Exploit#

No public exploit known

History#

Version 12026-06-18Record published in the CVE List.

Published

Published: 2026-06-18
Last modified: 2026-06-18

Vendor information

Vendor: SEPPmail
Product: Secure Email Gateway

All SEPPmail vulnerabilities

Score

7.1 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 25.0.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Path Traversal

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 15.0.5
Fixed
15.0.5

Scoring System

CVSS v4.0

7.1 High

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:H/SA:L

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Attack Requirements	Present
Privileges Required	Low
User Interaction	None
Vulnerable System Confidentiality	None
Vulnerable System Integrity	High
Vulnerable System Availability	Low
Subsequent System Confidentiality	None
Subsequent System Integrity	High
Subsequent System Availability	Low

CVSS v3.1

Not available

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).