Description (CNA)
A flaw was found in Netty's `SmtpResponseDecoder` component. A remote attacker, acting as a malicious or man-in-the-middle (MITM) SMTP server, could exploit this by sending a specially crafted, unbounded multi-line SMTP response without a terminator. This vulnerability leads to unbounded memory accumulation within the client's Java Virtual Machine (JVM) heap, causing an `OutOfMemoryError` and a denial of service (DoS) due to a process crash.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Red Hat / Red Hat build of Apache Camel for Spring Boot 4 | affected |
| Red Hat / Red Hat Fuse 7 | unaffected |
| Red Hat / Red Hat JBoss Enterprise Application Platform 7 | affected |
| Red Hat / Red Hat JBoss Enterprise Application Platform 7 | affected |
| Red Hat / Red Hat JBoss Enterprise Application Platform 7 | affected |
| Red Hat / Red Hat JBoss Enterprise Application Platform 7 | affected |
| Red Hat / Red Hat Single Sign-On 7 | affected |
CWE
CWE-1035
References
- https://access.redhat.com/security/cve/CVE-2026-93563
- https://bugzilla.redhat.com/show_bug.cgi?id=2536976
ADP enrichment
No English description supplied.
No references supplied.