Quick answers
- Is CVE-2026-114424 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-114424 being exploited in the wild.
- How severe is CVE-2026-114424?
- Informational severity, published 4 November 2026.
- Which products and versions are affected?
- Seppmail Secure Email Gateway before 15.1.1.
- Is there a fix for CVE-2026-114424?
- Yes: fixed in 15.1.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-114424 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-114424?
- Check whether you run Seppmail Secure Email Gateway at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: 15.1.1
Technical details
The vulnerability exists in SEPPmail's rule engine, which improperly evaluates replacement text in sender or recipient replacement rules as Perl code without sufficient sanitization. An unauthenticated remote attacker can send a message with crafted content that, when matched by an active replacement rule, results in arbitrary code execution in the mail-processing worker context (validated as running as root). The issue is fixed in version 15.1.1 by hardening evaluation of replacement values to prevent code execution.
Affected products
- SEPPmail Secure Email Gateway before 15.1.1
Timeline
- 2026-11-04: disclosed